[b87a5ed] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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[974906e2] | 7 | // cfa.y -- |
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| 8 | // |
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[c11e31c] | 9 | // Author : Peter A. Buhr |
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| 10 | // Created On : Sat Sep 1 20:22:55 2001 |
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| 11 | // Last Modified By : Peter A. Buhr |
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[9c23f31] | 12 | // Last Modified On : Sat Sep 24 12:16:53 2016 |
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| 13 | // Update Count : 1992 |
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[974906e2] | 14 | // |
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[c11e31c] | 15 | |
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[de62360d] | 16 | // This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C |
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| 17 | // grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts have been |
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| 18 | // copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar. |
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| 19 | // In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax |
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| 20 | // that must be subsequently rejected by semantic checks. Nevertheless, there are still several semantic checks |
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| 21 | // required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions. |
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[c11e31c] | 22 | |
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[de62360d] | 23 | // Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with |
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| 24 | // the grammar. |
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[c11e31c] | 25 | |
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| 26 | // The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for: |
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| 27 | // |
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| 28 | // 1. designation with '=' (use ':' instead) |
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| 29 | // |
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[de62360d] | 30 | // Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar also has |
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| 31 | // two levels of extensions. The first extensions cover most of the GCC C extensions, except for: |
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[c11e31c] | 32 | // |
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[e7aed49] | 33 | // 1. designation with and without '=' (use ':' instead) |
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| 34 | // 2. attributes not allowed in parenthesis of declarator |
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[c11e31c] | 35 | // |
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[de62360d] | 36 | // All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall |
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| 37 | // (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the |
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| 38 | // syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable |
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| 39 | // parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation" |
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| 40 | // grammar rule. |
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[51b7345] | 41 | |
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| 42 | %{ |
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[b87a5ed] | 43 | #define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time |
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| 44 | #define YYDEBUG 1 // get the pretty debugging code to compile |
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[51b7345] | 45 | |
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| 46 | #undef __GNUC_MINOR__ |
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| 47 | |
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| 48 | #include <cstdio> |
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| 49 | #include <stack> |
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| 50 | #include "lex.h" |
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[984dce6] | 51 | #include "parser.h" |
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[51b7345] | 52 | #include "ParseNode.h" |
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[984dce6] | 53 | #include "TypedefTable.h" |
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[1db21619] | 54 | #include "TypeData.h" |
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[51b7345] | 55 | #include "LinkageSpec.h" |
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[2298f728] | 56 | using namespace std; |
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[51b7345] | 57 | |
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[cbaee0d] | 58 | extern DeclarationNode * parseTree; |
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[8b7ee09] | 59 | extern LinkageSpec::Spec linkage; |
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[0da3e2c] | 60 | extern TypedefTable typedefTable; |
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| 61 | |
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[2298f728] | 62 | stack< LinkageSpec::Spec > linkageStack; |
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[7bf7fb9] | 63 | |
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[2298f728] | 64 | void appendStr( string *to, string *from ) { |
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[7bf7fb9] | 65 | // "abc" "def" "ghi" => "abcdefghi", remove new text from quotes and insert before last quote in old string. |
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[ab57786] | 66 | to->insert( to->length() - 1, from->substr( 1, from->length() - 2 ) ); |
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[7bf7fb9] | 67 | } // appendStr |
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[51b7345] | 68 | %} |
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| 69 | |
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[c11e31c] | 70 | //************************* TERMINAL TOKENS ******************************** |
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[51b7345] | 71 | |
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[c11e31c] | 72 | // keywords |
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[51b7345] | 73 | %token TYPEDEF |
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| 74 | %token AUTO EXTERN REGISTER STATIC |
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[b87a5ed] | 75 | %token INLINE // C99 |
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| 76 | %token FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1) |
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[51b7345] | 77 | %token CONST VOLATILE |
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[b87a5ed] | 78 | %token RESTRICT // C99 |
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| 79 | %token FORALL LVALUE // CFA |
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[51b7345] | 80 | %token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED |
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[90c3b1c] | 81 | %token VALIST // GCC |
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[b87a5ed] | 82 | %token BOOL COMPLEX IMAGINARY // C99 |
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| 83 | %token TYPEOF LABEL // GCC |
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[51b7345] | 84 | %token ENUM STRUCT UNION |
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[e7aed49] | 85 | %token OTYPE FTYPE DTYPE TRAIT // CFA |
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[5721a6d] | 86 | %token SIZEOF OFFSETOF |
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[b87a5ed] | 87 | %token ATTRIBUTE EXTENSION // GCC |
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[51b7345] | 88 | %token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN |
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[02e5ab6] | 89 | %token CHOOSE DISABLE ENABLE FALLTHRU TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT // CFA |
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[b87a5ed] | 90 | %token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1) |
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[c11e31c] | 91 | %token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL // C11 |
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[51b7345] | 92 | |
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[c11e31c] | 93 | // names and constants: lexer differentiates between identifier and typedef names |
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[b87a5ed] | 94 | %token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname |
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| 95 | %token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname |
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| 96 | %token<tok> INTEGERconstant FLOATINGconstant CHARACTERconstant STRINGliteral |
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| 97 | %token<tok> ZERO ONE // CFA |
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[51b7345] | 98 | |
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[c11e31c] | 99 | // multi-character operators |
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[b87a5ed] | 100 | %token ARROW // -> |
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| 101 | %token ICR DECR // ++ -- |
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| 102 | %token LS RS // << >> |
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| 103 | %token LE GE EQ NE // <= >= == != |
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| 104 | %token ANDAND OROR // && || |
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| 105 | %token ELLIPSIS // ... |
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| 106 | |
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| 107 | %token MULTassign DIVassign MODassign // *= /= %=/ |
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| 108 | %token PLUSassign MINUSassign // += -= |
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| 109 | %token LSassign RSassign // <<= >>= |
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| 110 | %token ANDassign ERassign ORassign // &= ^= |= |
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[51b7345] | 111 | |
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[e7aed49] | 112 | %token ATassign // @= |
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[097e2b0] | 113 | |
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[c11e31c] | 114 | // Types declaration |
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[51b7345] | 115 | %union |
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| 116 | { |
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[b87a5ed] | 117 | Token tok; |
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| 118 | ParseNode *pn; |
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| 119 | ExpressionNode *en; |
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| 120 | DeclarationNode *decl; |
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[68cd1ce] | 121 | DeclarationNode::Aggregate aggKey; |
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[b87a5ed] | 122 | DeclarationNode::TypeClass tclass; |
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| 123 | StatementNode *sn; |
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[d1625f8] | 124 | ConstantExpr *constant; |
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[2f22cc4] | 125 | ForCtl *fctl; |
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[7f5566b] | 126 | LabelNode *label; |
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[b87a5ed] | 127 | InitializerNode *in; |
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[d9e2280] | 128 | OperKinds op; |
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[ab57786] | 129 | std::string *str; |
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[7f5566b] | 130 | bool flag; |
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[51b7345] | 131 | } |
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| 132 | |
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[097e2b0] | 133 | %type<tok> identifier no_01_identifier no_attr_identifier zero_one |
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[2871210] | 134 | %type<tok> identifier_or_type_name no_attr_identifier_or_type_name no_01_identifier_or_type_name |
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[ab57786] | 135 | %type<constant> string_literal |
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| 136 | %type<str> string_literal_list |
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[51b7345] | 137 | |
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[c11e31c] | 138 | // expressions |
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[d1625f8] | 139 | %type<en> constant |
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[b87a5ed] | 140 | %type<en> tuple tuple_expression_list |
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[9706554] | 141 | %type<op> ptrref_operator unary_operator assignment_operator |
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[b87a5ed] | 142 | %type<en> primary_expression postfix_expression unary_expression |
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| 143 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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| 144 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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| 145 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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| 146 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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| 147 | %type<en> comma_expression comma_expression_opt |
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[2f22cc4] | 148 | %type<en> argument_expression_list argument_expression assignment_opt |
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| 149 | %type<fctl> for_control_expression |
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[51b7345] | 150 | %type<en> subrange |
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[7f5566b] | 151 | %type<en> asm_operands_opt asm_operands_list asm_operand |
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| 152 | %type<label> label_list |
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[d1625f8] | 153 | %type<en> asm_clobbers_list_opt |
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[7f5566b] | 154 | %type<flag> asm_volatile_opt |
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[51b7345] | 155 | |
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[c11e31c] | 156 | // statements |
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[b87a5ed] | 157 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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[097e2b0] | 158 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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[b87a5ed] | 159 | %type<sn> fall_through_opt fall_through |
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| 160 | %type<sn> statement statement_list |
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| 161 | %type<sn> block_item_list block_item |
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[51b7345] | 162 | %type<sn> case_clause |
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[8688ce1] | 163 | %type<en> case_value |
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| 164 | %type<sn> case_value_list case_label case_label_list |
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[b87a5ed] | 165 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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[1d4580a] | 166 | %type<sn> handler_list handler_clause finally_clause |
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[51b7345] | 167 | |
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[c11e31c] | 168 | // declarations |
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[51b7345] | 169 | %type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array |
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| 170 | %type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function |
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| 171 | %type<decl> abstract_parameter_ptr abstract_ptr |
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| 172 | |
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| 173 | %type<aggKey> aggregate_key |
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| 174 | %type<decl> aggregate_name |
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| 175 | |
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| 176 | %type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension |
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| 177 | |
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| 178 | %type<decl> assertion assertion_list_opt |
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| 179 | |
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| 180 | %type<en> bit_subrange_size_opt bit_subrange_size |
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| 181 | |
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| 182 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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| 183 | |
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[4040425] | 184 | %type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier |
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[51b7345] | 185 | |
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| 186 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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| 187 | %type<decl> declaration_specifier declarator declaring_list |
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| 188 | |
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| 189 | %type<decl> elaborated_type_name |
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| 190 | |
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| 191 | %type<decl> enumerator_list enum_name |
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| 192 | %type<en> enumerator_value_opt |
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| 193 | |
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| 194 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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| 195 | |
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| 196 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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| 197 | %type<en> field field_list |
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| 198 | |
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[4d51835] | 199 | %type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr |
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[51b7345] | 200 | |
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| 201 | %type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function |
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| 202 | %type<decl> identifier_parameter_ptr identifier_list |
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| 203 | |
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| 204 | %type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple |
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| 205 | %type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list |
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| 206 | %type<decl> new_abstract_ptr new_abstract_tuple |
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| 207 | |
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| 208 | %type<decl> new_array_parameter_1st_dimension |
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| 209 | |
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[4040425] | 210 | %type<decl> new_trait_declaring_list new_declaration new_field_declaring_list |
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[51b7345] | 211 | %type<decl> new_function_declaration new_function_return new_function_specifier |
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| 212 | |
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| 213 | %type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple |
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| 214 | %type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr |
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| 215 | |
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| 216 | %type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt |
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| 217 | |
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| 218 | %type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier |
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| 219 | |
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| 220 | %type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array |
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| 221 | %type<decl> old_function_declarator old_function_no_ptr old_function_ptr |
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| 222 | |
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| 223 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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| 224 | %type<decl> parameter_type_list_opt |
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| 225 | |
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[2871210] | 226 | %type<decl> paren_identifier paren_type |
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[51b7345] | 227 | |
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[0da3e2c] | 228 | %type<decl> storage_class storage_class_list |
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[51b7345] | 229 | |
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| 230 | %type<decl> sue_declaration_specifier sue_type_specifier |
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| 231 | |
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| 232 | %type<tclass> type_class |
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| 233 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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| 234 | |
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[2871210] | 235 | %type<decl> typedef type_array typedef_declaration typedef_declaration_specifier typedef_expression |
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| 236 | %type<decl> type_function type_parameter_array type_parameter_function type_parameter_ptr |
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[c6b1105] | 237 | %type<decl> type_parameter_redeclarator type_ptr variable_type_redeclarator typedef_type_specifier |
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[2871210] | 238 | %type<decl> typegen_declaration_specifier typegen_type_specifier typegen_name |
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[51b7345] | 239 | |
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| 240 | %type<decl> type_name type_name_no_function |
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| 241 | %type<decl> type_parameter type_parameter_list |
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| 242 | |
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| 243 | %type<en> type_name_list |
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| 244 | |
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| 245 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier |
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| 246 | |
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| 247 | %type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function |
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| 248 | %type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr |
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| 249 | |
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[1db21619] | 250 | %type<decl> attribute_list_opt attribute_list attribute |
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| 251 | |
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[c11e31c] | 252 | // initializers |
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[51b7345] | 253 | %type<in> initializer initializer_list initializer_opt |
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| 254 | |
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[c11e31c] | 255 | // designators |
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[51b7345] | 256 | %type<en> designator designator_list designation |
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| 257 | |
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| 258 | |
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[b87a5ed] | 259 | // Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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| 260 | // is ambiguous: |
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| 261 | // .---------. matches IF '(' comma_expression ')' statement |
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[c11e31c] | 262 | // if ( C ) S1 else S2 |
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[b87a5ed] | 263 | // `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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[51b7345] | 264 | |
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[c11e31c] | 265 | %nonassoc THEN // rule precedence for IF '(' comma_expression ')' statement |
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| 266 | %nonassoc ELSE // token precedence for start of else clause in IF statement |
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[51b7345] | 267 | |
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[b87a5ed] | 268 | %start translation_unit // parse-tree root |
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[51b7345] | 269 | |
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| 270 | %% |
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[c11e31c] | 271 | //************************* Namespace Management ******************************** |
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| 272 | |
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[de62360d] | 273 | // The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols |
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| 274 | // "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free |
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| 275 | // grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this |
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| 276 | // grammar uses the ANSI style. |
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[c11e31c] | 277 | // |
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[de62360d] | 278 | // Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those |
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| 279 | // introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. This latter |
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| 280 | // type name creates a third class of identifiers that must be distinguished by the scanner. |
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[c11e31c] | 281 | // |
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[de62360d] | 282 | // Since the scanner cannot distinguish among the different classes of identifiers without some context information, it |
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| 283 | // accesses a data structure (the TypedefTable) to allow classification of an identifier that it has just read. |
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| 284 | // Semantic actions during the parser update this data structure when the class of identifiers change. |
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[c11e31c] | 285 | // |
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[de62360d] | 286 | // Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a |
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| 287 | // local scope; it must revert to its original class at the end of the block. Since type names can be local to a |
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| 288 | // particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are |
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| 289 | // local to the current declaration scope and those that persist past the end of the declaration (i.e., names defined in |
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| 290 | // "typedef" or "type" declarations). |
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[c11e31c] | 291 | // |
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[de62360d] | 292 | // The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and closing of |
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| 293 | // scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur |
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| 294 | // within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point |
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| 295 | // of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have |
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| 296 | // enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra |
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| 297 | // rules is to open a new scope unconditionally. As the grammar evolves, it may be neccesary to add or move around |
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| 298 | // "push" and "pop" nonterminals to resolve conflicts of this sort. |
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[51b7345] | 299 | |
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| 300 | push: |
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[ab57786] | 301 | { typedefTable.enterScope(); } |
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[4d51835] | 302 | ; |
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[51b7345] | 303 | |
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| 304 | pop: |
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[ab57786] | 305 | { typedefTable.leaveScope(); } |
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[4d51835] | 306 | ; |
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[51b7345] | 307 | |
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[c11e31c] | 308 | //************************* CONSTANTS ******************************** |
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[51b7345] | 309 | |
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| 310 | constant: |
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[de62360d] | 311 | // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant". |
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[ab57786] | 312 | INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); } |
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| 313 | | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); } |
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| 314 | | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); } |
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[4d51835] | 315 | ; |
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[51b7345] | 316 | |
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| 317 | identifier: |
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[4d51835] | 318 | IDENTIFIER |
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| 319 | | ATTR_IDENTIFIER // CFA |
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| 320 | | zero_one // CFA |
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| 321 | ; |
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[51b7345] | 322 | |
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| 323 | no_01_identifier: |
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[4d51835] | 324 | IDENTIFIER |
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| 325 | | ATTR_IDENTIFIER // CFA |
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| 326 | ; |
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[51b7345] | 327 | |
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| 328 | no_attr_identifier: |
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[4d51835] | 329 | IDENTIFIER |
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[bd85400] | 330 | | zero_one // CFA |
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[4d51835] | 331 | ; |
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[51b7345] | 332 | |
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[b87a5ed] | 333 | zero_one: // CFA |
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[4d51835] | 334 | ZERO |
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| 335 | | ONE |
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| 336 | ; |
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[51b7345] | 337 | |
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[ab57786] | 338 | string_literal: |
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| 339 | string_literal_list { $$ = build_constantStr( *$1 ); } |
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| 340 | ; |
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| 341 | |
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[b87a5ed] | 342 | string_literal_list: // juxtaposed strings are concatenated |
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[ab57786] | 343 | STRINGliteral { $$ = $1; } // conversion from tok to str |
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[7bf7fb9] | 344 | | string_literal_list STRINGliteral |
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| 345 | { |
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[ab57786] | 346 | appendStr( $1, $2 ); // append 2nd juxtaposed string to 1st |
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[7bf7fb9] | 347 | delete $2; // allocated by lexer |
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[ab57786] | 348 | $$ = $1; // conversion from tok to str |
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[7bf7fb9] | 349 | } |
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[4d51835] | 350 | ; |
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[51b7345] | 351 | |
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[c11e31c] | 352 | //************************* EXPRESSIONS ******************************** |
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[51b7345] | 353 | |
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| 354 | primary_expression: |
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[4d51835] | 355 | IDENTIFIER // typedef name cannot be used as a variable name |
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[d1625f8] | 356 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
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[4d51835] | 357 | | zero_one |
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[d1625f8] | 358 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
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[4d51835] | 359 | | '(' comma_expression ')' |
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| 360 | { $$ = $2; } |
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| 361 | | '(' compound_statement ')' // GCC, lambda expression |
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[1b77274] | 362 | { $$ = new ExpressionNode( build_valexpr( $2 ) ); } |
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[4d51835] | 363 | ; |
---|
[51b7345] | 364 | |
---|
| 365 | postfix_expression: |
---|
[4d51835] | 366 | primary_expression |
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| 367 | | postfix_expression '[' push assignment_expression pop ']' |
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[c6b1105] | 368 | // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a |
---|
[de62360d] | 369 | // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be |
---|
| 370 | // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is |
---|
| 371 | // equivalent to the old x[i,j]. |
---|
[d1625f8] | 372 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $4 ) ); } |
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[4d51835] | 373 | | postfix_expression '(' argument_expression_list ')' |
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[d1625f8] | 374 | { $$ = new ExpressionNode( build_func( $1, $3 ) ); } |
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[ab57786] | 375 | // ambiguity with .0 so space required after field-selection, e.g. |
---|
[bd85400] | 376 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
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[4d51835] | 377 | | postfix_expression '.' no_attr_identifier |
---|
[d1625f8] | 378 | { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); } |
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[4d51835] | 379 | | postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector |
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| 380 | | postfix_expression ARROW no_attr_identifier |
---|
[d1625f8] | 381 | { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); } |
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[4d51835] | 382 | | postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector |
---|
| 383 | | postfix_expression ICR |
---|
[d1625f8] | 384 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); } |
---|
[4d51835] | 385 | | postfix_expression DECR |
---|
[d1625f8] | 386 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); } |
---|
[4d51835] | 387 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99 |
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[d1625f8] | 388 | { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); } |
---|
[097e2b0] | 389 | | postfix_expression '{' argument_expression_list '}' // CFA |
---|
| 390 | { |
---|
[9706554] | 391 | Token fn; |
---|
[9c23f31] | 392 | fn.str = new std::string( "?{}" ); // location undefined - use location of '{'? |
---|
[b6fe7e6] | 393 | $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) ); |
---|
[097e2b0] | 394 | } |
---|
[4d51835] | 395 | ; |
---|
[51b7345] | 396 | |
---|
| 397 | argument_expression_list: |
---|
[4d51835] | 398 | argument_expression |
---|
| 399 | | argument_expression_list ',' argument_expression |
---|
[1d4580a] | 400 | { $$ = (ExpressionNode *)( $1->set_last( $3 )); } |
---|
[4d51835] | 401 | ; |
---|
[51b7345] | 402 | |
---|
| 403 | argument_expression: |
---|
[4d51835] | 404 | // empty |
---|
| 405 | { $$ = 0; } // use default argument |
---|
| 406 | | assignment_expression |
---|
| 407 | ; |
---|
[b87a5ed] | 408 | |
---|
| 409 | field_list: // CFA, tuple field selector |
---|
[4d51835] | 410 | field |
---|
[1d4580a] | 411 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 412 | ; |
---|
[b87a5ed] | 413 | |
---|
| 414 | field: // CFA, tuple field selector |
---|
[4d51835] | 415 | no_attr_identifier |
---|
[d1625f8] | 416 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
---|
[ab57786] | 417 | // ambiguity with .0 so space required after field-selection, e.g. |
---|
[bd85400] | 418 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
---|
[4d51835] | 419 | | no_attr_identifier '.' field |
---|
[d1625f8] | 420 | { $$ = new ExpressionNode( build_fieldSel( $3, build_varref( $1 ) ) ); } |
---|
[4d51835] | 421 | | no_attr_identifier '.' '[' push field_list pop ']' |
---|
[d1625f8] | 422 | { $$ = new ExpressionNode( build_fieldSel( $5, build_varref( $1 ) ) ); } |
---|
[4d51835] | 423 | | no_attr_identifier ARROW field |
---|
[d1625f8] | 424 | { $$ = new ExpressionNode( build_pfieldSel( $3, build_varref( $1 ) ) ); } |
---|
[4d51835] | 425 | | no_attr_identifier ARROW '[' push field_list pop ']' |
---|
[d1625f8] | 426 | { $$ = new ExpressionNode( build_pfieldSel( $5, build_varref( $1 ) ) ); } |
---|
[4d51835] | 427 | ; |
---|
[51b7345] | 428 | |
---|
| 429 | unary_expression: |
---|
[4d51835] | 430 | postfix_expression |
---|
[c6b1105] | 431 | // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires |
---|
| 432 | // semantics checks, e.g., ++3, 3--, *3, &&3 |
---|
[51b1202] | 433 | | constant |
---|
| 434 | { $$ = $1; } |
---|
[ab57786] | 435 | | string_literal |
---|
[d1625f8] | 436 | { $$ = new ExpressionNode( $1 ); } |
---|
[4d51835] | 437 | | EXTENSION cast_expression // GCC |
---|
[e04ef3a] | 438 | { $$ = $2->set_extension( true ); } |
---|
[c6b1105] | 439 | // '*' ('&') is separated from unary_operator because of shift/reduce conflict in: |
---|
| 440 | // { * X; } // dereference X |
---|
| 441 | // { * int X; } // CFA declaration of pointer to int |
---|
[51e076e] | 442 | | ptrref_operator cast_expression // CFA |
---|
[9706554] | 443 | { |
---|
| 444 | switch ( $1 ) { |
---|
[d9e2280] | 445 | case OperKinds::AddressOf: |
---|
[d1625f8] | 446 | $$ = new ExpressionNode( build_addressOf( $2 ) ); |
---|
[9706554] | 447 | break; |
---|
[d9e2280] | 448 | case OperKinds::PointTo: |
---|
[d1625f8] | 449 | $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); |
---|
[9706554] | 450 | break; |
---|
| 451 | default: |
---|
| 452 | assert( false ); |
---|
| 453 | } |
---|
| 454 | } |
---|
[4d51835] | 455 | | unary_operator cast_expression |
---|
[d1625f8] | 456 | { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); } |
---|
[dd51906] | 457 | | ICR unary_expression |
---|
[d1625f8] | 458 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); } |
---|
[dd51906] | 459 | | DECR unary_expression |
---|
[d1625f8] | 460 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); } |
---|
[4d51835] | 461 | | SIZEOF unary_expression |
---|
[d1625f8] | 462 | { $$ = new ExpressionNode( build_sizeOfexpr( $2 ) ); } |
---|
[4d51835] | 463 | | SIZEOF '(' type_name_no_function ')' |
---|
[d1625f8] | 464 | { $$ = new ExpressionNode( build_sizeOftype( $3 ) ); } |
---|
| 465 | | ALIGNOF unary_expression // GCC, variable alignment |
---|
| 466 | { $$ = new ExpressionNode( build_alignOfexpr( $2 ) ); } |
---|
| 467 | | ALIGNOF '(' type_name_no_function ')' // GCC, type alignment |
---|
| 468 | { $$ = new ExpressionNode( build_alignOftype( $3 ) ); } |
---|
[5721a6d] | 469 | | OFFSETOF '(' type_name_no_function ',' no_attr_identifier ')' |
---|
[d1625f8] | 470 | { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); } |
---|
[4d51835] | 471 | | ATTR_IDENTIFIER |
---|
[d1625f8] | 472 | { $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), nullptr ) ); } |
---|
[4d51835] | 473 | | ATTR_IDENTIFIER '(' argument_expression ')' |
---|
[d1625f8] | 474 | { $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), $3 ) ); } |
---|
| 475 | | ATTR_IDENTIFIER '(' type_name ')' |
---|
| 476 | { $$ = new ExpressionNode( build_attrtype( build_varref( $1 ), $3 ) ); } |
---|
[c6b1105] | 477 | // | ANDAND IDENTIFIER // GCC, address of label |
---|
[d1625f8] | 478 | // { $$ = new ExpressionNode( new OperatorNode( OperKinds::LabelAddress ), new ExpressionNode( build_varref( $2, true ) ); } |
---|
[4d51835] | 479 | ; |
---|
[51b7345] | 480 | |
---|
[dd51906] | 481 | ptrref_operator: |
---|
[d9e2280] | 482 | '*' { $$ = OperKinds::PointTo; } |
---|
| 483 | | '&' { $$ = OperKinds::AddressOf; } |
---|
[c6b1105] | 484 | // GCC, address of label must be handled by semantic check for ref,ref,label |
---|
[d9e2280] | 485 | // | ANDAND { $$ = OperKinds::And; } |
---|
[dd51906] | 486 | ; |
---|
| 487 | |
---|
[51b7345] | 488 | unary_operator: |
---|
[d9e2280] | 489 | '+' { $$ = OperKinds::UnPlus; } |
---|
| 490 | | '-' { $$ = OperKinds::UnMinus; } |
---|
| 491 | | '!' { $$ = OperKinds::Neg; } |
---|
| 492 | | '~' { $$ = OperKinds::BitNeg; } |
---|
[4d51835] | 493 | ; |
---|
[51b7345] | 494 | |
---|
| 495 | cast_expression: |
---|
[4d51835] | 496 | unary_expression |
---|
| 497 | | '(' type_name_no_function ')' cast_expression |
---|
[d1625f8] | 498 | { $$ = new ExpressionNode( build_cast( $2, $4 ) ); } |
---|
[4d51835] | 499 | | '(' type_name_no_function ')' tuple |
---|
[d1625f8] | 500 | { $$ = new ExpressionNode( build_cast( $2, $4 ) ); } |
---|
[4d51835] | 501 | ; |
---|
[51b7345] | 502 | |
---|
| 503 | multiplicative_expression: |
---|
[4d51835] | 504 | cast_expression |
---|
| 505 | | multiplicative_expression '*' cast_expression |
---|
[d1625f8] | 506 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); } |
---|
[4d51835] | 507 | | multiplicative_expression '/' cast_expression |
---|
[d1625f8] | 508 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); } |
---|
[4d51835] | 509 | | multiplicative_expression '%' cast_expression |
---|
[d1625f8] | 510 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); } |
---|
[4d51835] | 511 | ; |
---|
[51b7345] | 512 | |
---|
| 513 | additive_expression: |
---|
[4d51835] | 514 | multiplicative_expression |
---|
| 515 | | additive_expression '+' multiplicative_expression |
---|
[d1625f8] | 516 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); } |
---|
[4d51835] | 517 | | additive_expression '-' multiplicative_expression |
---|
[d1625f8] | 518 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); } |
---|
[4d51835] | 519 | ; |
---|
[51b7345] | 520 | |
---|
| 521 | shift_expression: |
---|
[4d51835] | 522 | additive_expression |
---|
| 523 | | shift_expression LS additive_expression |
---|
[d1625f8] | 524 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); } |
---|
[4d51835] | 525 | | shift_expression RS additive_expression |
---|
[d1625f8] | 526 | { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); } |
---|
[4d51835] | 527 | ; |
---|
[51b7345] | 528 | |
---|
| 529 | relational_expression: |
---|
[4d51835] | 530 | shift_expression |
---|
| 531 | | relational_expression '<' shift_expression |
---|
[d1625f8] | 532 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); } |
---|
[4d51835] | 533 | | relational_expression '>' shift_expression |
---|
[d1625f8] | 534 | { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); } |
---|
[4d51835] | 535 | | relational_expression LE shift_expression |
---|
[d1625f8] | 536 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); } |
---|
[4d51835] | 537 | | relational_expression GE shift_expression |
---|
[d1625f8] | 538 | { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); } |
---|
[4d51835] | 539 | ; |
---|
[51b7345] | 540 | |
---|
| 541 | equality_expression: |
---|
[4d51835] | 542 | relational_expression |
---|
| 543 | | equality_expression EQ relational_expression |
---|
[d1625f8] | 544 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); } |
---|
[4d51835] | 545 | | equality_expression NE relational_expression |
---|
[d1625f8] | 546 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); } |
---|
[4d51835] | 547 | ; |
---|
[51b7345] | 548 | |
---|
| 549 | AND_expression: |
---|
[4d51835] | 550 | equality_expression |
---|
| 551 | | AND_expression '&' equality_expression |
---|
[d1625f8] | 552 | { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); } |
---|
[4d51835] | 553 | ; |
---|
[51b7345] | 554 | |
---|
| 555 | exclusive_OR_expression: |
---|
[4d51835] | 556 | AND_expression |
---|
| 557 | | exclusive_OR_expression '^' AND_expression |
---|
[d1625f8] | 558 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); } |
---|
[4d51835] | 559 | ; |
---|
[51b7345] | 560 | |
---|
| 561 | inclusive_OR_expression: |
---|
[4d51835] | 562 | exclusive_OR_expression |
---|
| 563 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
[d1625f8] | 564 | { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); } |
---|
[4d51835] | 565 | ; |
---|
[51b7345] | 566 | |
---|
| 567 | logical_AND_expression: |
---|
[4d51835] | 568 | inclusive_OR_expression |
---|
| 569 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
[d1625f8] | 570 | { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); } |
---|
[4d51835] | 571 | ; |
---|
[51b7345] | 572 | |
---|
| 573 | logical_OR_expression: |
---|
[4d51835] | 574 | logical_AND_expression |
---|
| 575 | | logical_OR_expression OROR logical_AND_expression |
---|
[d1625f8] | 576 | { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); } |
---|
[4d51835] | 577 | ; |
---|
[51b7345] | 578 | |
---|
| 579 | conditional_expression: |
---|
[4d51835] | 580 | logical_OR_expression |
---|
| 581 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
[d1625f8] | 582 | { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); } |
---|
[d9e2280] | 583 | // FIX ME: this hack computes $1 twice |
---|
[4d51835] | 584 | | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand |
---|
[d1625f8] | 585 | { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); } |
---|
[4d51835] | 586 | | logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression |
---|
[d1625f8] | 587 | { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); } |
---|
[4d51835] | 588 | ; |
---|
[51b7345] | 589 | |
---|
| 590 | constant_expression: |
---|
[4d51835] | 591 | conditional_expression |
---|
| 592 | ; |
---|
[51b7345] | 593 | |
---|
| 594 | assignment_expression: |
---|
[4d51835] | 595 | // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples |
---|
| 596 | conditional_expression |
---|
| 597 | | unary_expression assignment_operator assignment_expression |
---|
[d1625f8] | 598 | { $$ = new ExpressionNode( build_binary_ptr( $2, $1, $3 ) ); } |
---|
[4d51835] | 599 | | tuple assignment_opt // CFA, tuple expression |
---|
[d1625f8] | 600 | { $$ = ( $2 == 0 ) ? $1 : new ExpressionNode( build_binary_ptr( OperKinds::Assign, $1, $2 ) ); } |
---|
[4d51835] | 601 | ; |
---|
[51b7345] | 602 | |
---|
| 603 | assignment_expression_opt: |
---|
[4d51835] | 604 | // empty |
---|
[d1625f8] | 605 | { $$ = nullptr; } |
---|
[4d51835] | 606 | | assignment_expression |
---|
| 607 | ; |
---|
[b87a5ed] | 608 | |
---|
[9706554] | 609 | assignment_operator: |
---|
[d9e2280] | 610 | '=' { $$ = OperKinds::Assign; } |
---|
[a839867] | 611 | | ATassign { $$ = OperKinds::AtAssn; } |
---|
[d9e2280] | 612 | | MULTassign { $$ = OperKinds::MulAssn; } |
---|
| 613 | | DIVassign { $$ = OperKinds::DivAssn; } |
---|
| 614 | | MODassign { $$ = OperKinds::ModAssn; } |
---|
| 615 | | PLUSassign { $$ = OperKinds::PlusAssn; } |
---|
| 616 | | MINUSassign { $$ = OperKinds::MinusAssn; } |
---|
| 617 | | LSassign { $$ = OperKinds::LSAssn; } |
---|
| 618 | | RSassign { $$ = OperKinds::RSAssn; } |
---|
| 619 | | ANDassign { $$ = OperKinds::AndAssn; } |
---|
| 620 | | ERassign { $$ = OperKinds::ERAssn; } |
---|
| 621 | | ORassign { $$ = OperKinds::OrAssn; } |
---|
[413ad05] | 622 | ; |
---|
[9706554] | 623 | |
---|
[b87a5ed] | 624 | tuple: // CFA, tuple |
---|
[de62360d] | 625 | // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with |
---|
| 626 | // comma_expression in new_identifier_parameter_array and new_abstract_array |
---|
[2871210] | 627 | '[' ']' |
---|
[d1625f8] | 628 | { $$ = new ExpressionNode( build_tuple() ); } |
---|
[4d51835] | 629 | | '[' push assignment_expression pop ']' |
---|
[d1625f8] | 630 | { $$ = new ExpressionNode( build_tuple( $3 ) ); } |
---|
[4d51835] | 631 | | '[' push ',' tuple_expression_list pop ']' |
---|
[1d4580a] | 632 | { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $4 ) ) ); } |
---|
[4d51835] | 633 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
---|
[1d4580a] | 634 | { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)$3->set_last( $5 ) ) ); } |
---|
[4d51835] | 635 | ; |
---|
[51b7345] | 636 | |
---|
| 637 | tuple_expression_list: |
---|
[4d51835] | 638 | assignment_expression_opt |
---|
| 639 | | tuple_expression_list ',' assignment_expression_opt |
---|
[1d4580a] | 640 | { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 641 | ; |
---|
[51b7345] | 642 | |
---|
| 643 | comma_expression: |
---|
[4d51835] | 644 | assignment_expression |
---|
[9706554] | 645 | | comma_expression ',' assignment_expression |
---|
[d1625f8] | 646 | { $$ = new ExpressionNode( build_comma( $1, $3 ) ); } |
---|
[4d51835] | 647 | ; |
---|
[51b7345] | 648 | |
---|
| 649 | comma_expression_opt: |
---|
[4d51835] | 650 | // empty |
---|
| 651 | { $$ = 0; } |
---|
| 652 | | comma_expression |
---|
| 653 | ; |
---|
[51b7345] | 654 | |
---|
[c11e31c] | 655 | //*************************** STATEMENTS ******************************* |
---|
[51b7345] | 656 | |
---|
| 657 | statement: |
---|
[4d51835] | 658 | labeled_statement |
---|
| 659 | | compound_statement |
---|
| 660 | | expression_statement { $$ = $1; } |
---|
| 661 | | selection_statement |
---|
| 662 | | iteration_statement |
---|
| 663 | | jump_statement |
---|
| 664 | | exception_statement |
---|
| 665 | | asm_statement |
---|
[097e2b0] | 666 | | '^' postfix_expression '{' argument_expression_list '}' ';' // CFA |
---|
| 667 | { |
---|
[d9e2280] | 668 | Token fn; |
---|
[2298f728] | 669 | fn.str = new string( "^?{}" ); // location undefined |
---|
[e82aa9df] | 670 | $$ = new StatementNode( build_expr( new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) ) ) ); |
---|
[097e2b0] | 671 | } |
---|
[4d51835] | 672 | ; |
---|
[51b7345] | 673 | |
---|
| 674 | labeled_statement: |
---|
[c6b1105] | 675 | // labels cannot be identifiers 0 or 1 |
---|
| 676 | IDENTIFIER ':' attribute_list_opt statement |
---|
[1db21619] | 677 | { |
---|
| 678 | $$ = $4->add_label( $1 ); |
---|
| 679 | } |
---|
[4d51835] | 680 | ; |
---|
[51b7345] | 681 | |
---|
| 682 | compound_statement: |
---|
[4d51835] | 683 | '{' '}' |
---|
[e82aa9df] | 684 | { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); } |
---|
[4d51835] | 685 | | '{' |
---|
[de62360d] | 686 | // Two scopes are necessary because the block itself has a scope, but every declaration within the block also |
---|
| 687 | // requires its own scope |
---|
[4d51835] | 688 | push push |
---|
[51b1202] | 689 | local_label_declaration_opt // GCC, local labels |
---|
[4d51835] | 690 | block_item_list pop '}' // C99, intermix declarations and statements |
---|
[e82aa9df] | 691 | { $$ = new StatementNode( build_compound( $5 ) ); } |
---|
[4d51835] | 692 | ; |
---|
[b87a5ed] | 693 | |
---|
| 694 | block_item_list: // C99 |
---|
[4d51835] | 695 | block_item |
---|
| 696 | | block_item_list push block_item |
---|
[1d4580a] | 697 | { if ( $1 != 0 ) { $1->set_last( $3 ); $$ = $1; } } |
---|
[4d51835] | 698 | ; |
---|
[51b7345] | 699 | |
---|
| 700 | block_item: |
---|
[4d51835] | 701 | declaration // CFA, new & old style declarations |
---|
[e82aa9df] | 702 | { $$ = new StatementNode( $1 ); } |
---|
[4d51835] | 703 | | EXTENSION declaration // GCC |
---|
[8e9cbb2] | 704 | { // mark all fields in list |
---|
[926af74] | 705 | for ( DeclarationNode *iter = $2; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) |
---|
[8e9cbb2] | 706 | iter->set_extension( true ); |
---|
[e82aa9df] | 707 | $$ = new StatementNode( $2 ); |
---|
[8e9cbb2] | 708 | } |
---|
[4d51835] | 709 | | function_definition |
---|
[e82aa9df] | 710 | { $$ = new StatementNode( $1 ); } |
---|
[4d51835] | 711 | | statement pop |
---|
| 712 | ; |
---|
[51b7345] | 713 | |
---|
| 714 | statement_list: |
---|
[4d51835] | 715 | statement |
---|
| 716 | | statement_list statement |
---|
[1d4580a] | 717 | { if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } } |
---|
[4d51835] | 718 | ; |
---|
[51b7345] | 719 | |
---|
| 720 | expression_statement: |
---|
[4d51835] | 721 | comma_expression_opt ';' |
---|
[e82aa9df] | 722 | { $$ = new StatementNode( build_expr( $1 ) ); } |
---|
[4d51835] | 723 | ; |
---|
[51b7345] | 724 | |
---|
| 725 | selection_statement: |
---|
[4d51835] | 726 | IF '(' comma_expression ')' statement %prec THEN |
---|
| 727 | // explicitly deal with the shift/reduce conflict on if/else |
---|
[e82aa9df] | 728 | { $$ = new StatementNode( build_if( $3, $5, nullptr ) ); } |
---|
[4d51835] | 729 | | IF '(' comma_expression ')' statement ELSE statement |
---|
[e82aa9df] | 730 | { $$ = new StatementNode( build_if( $3, $5, $7 ) ); } |
---|
[4d51835] | 731 | | SWITCH '(' comma_expression ')' case_clause // CFA |
---|
[e82aa9df] | 732 | { $$ = new StatementNode( build_switch( $3, $5 ) ); } |
---|
[4d51835] | 733 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA |
---|
[4e06c1e] | 734 | { |
---|
[e82aa9df] | 735 | StatementNode *sw = new StatementNode( build_switch( $3, $8 ) ); |
---|
[4e06c1e] | 736 | // The semantics of the declaration list is changed to include associated initialization, which is performed |
---|
| 737 | // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound |
---|
| 738 | // statement around the switch. Statements after the initial declaration list can never be executed, and |
---|
[8688ce1] | 739 | // therefore, are removed from the grammar even though C allows it. The change also applies to choose |
---|
| 740 | // statement. |
---|
[e82aa9df] | 741 | $$ = $7 != 0 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw; |
---|
[4e06c1e] | 742 | } |
---|
[4d51835] | 743 | | CHOOSE '(' comma_expression ')' case_clause // CFA |
---|
[e82aa9df] | 744 | { $$ = new StatementNode( build_switch( $3, $5 ) ); } |
---|
[4d51835] | 745 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA |
---|
[4e06c1e] | 746 | { |
---|
[e82aa9df] | 747 | StatementNode *sw = new StatementNode( build_switch( $3, $8 ) ); |
---|
| 748 | $$ = $7 != 0 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw; |
---|
[4e06c1e] | 749 | } |
---|
[4d51835] | 750 | ; |
---|
[b87a5ed] | 751 | |
---|
[de62360d] | 752 | // CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case |
---|
| 753 | // clause allows a list of values and subranges. |
---|
[b87a5ed] | 754 | |
---|
| 755 | case_value: // CFA |
---|
[4d51835] | 756 | constant_expression { $$ = $1; } |
---|
| 757 | | constant_expression ELLIPSIS constant_expression // GCC, subrange |
---|
[d1625f8] | 758 | { $$ = new ExpressionNode( build_range( $1, $3 ) ); } |
---|
[4d51835] | 759 | | subrange // CFA, subrange |
---|
| 760 | ; |
---|
[b87a5ed] | 761 | |
---|
| 762 | case_value_list: // CFA |
---|
[e82aa9df] | 763 | case_value { $$ = new StatementNode( build_case( $1 ) ); } |
---|
[064e3ff] | 764 | // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5" |
---|
[e82aa9df] | 765 | | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); } |
---|
[4d51835] | 766 | ; |
---|
[b87a5ed] | 767 | |
---|
| 768 | case_label: // CFA |
---|
[8688ce1] | 769 | CASE case_value_list ':' { $$ = $2; } |
---|
[e82aa9df] | 770 | | DEFAULT ':' { $$ = new StatementNode( build_default() ); } |
---|
[4d51835] | 771 | // A semantic check is required to ensure only one default clause per switch/choose statement. |
---|
| 772 | ; |
---|
[b87a5ed] | 773 | |
---|
| 774 | case_label_list: // CFA |
---|
[4d51835] | 775 | case_label |
---|
[1d4580a] | 776 | | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); } |
---|
[4d51835] | 777 | ; |
---|
[b87a5ed] | 778 | |
---|
| 779 | case_clause: // CFA |
---|
[e82aa9df] | 780 | case_label_list statement { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); } |
---|
[4d51835] | 781 | ; |
---|
[b87a5ed] | 782 | |
---|
| 783 | switch_clause_list_opt: // CFA |
---|
[4d51835] | 784 | // empty |
---|
| 785 | { $$ = 0; } |
---|
| 786 | | switch_clause_list |
---|
| 787 | ; |
---|
[b87a5ed] | 788 | |
---|
| 789 | switch_clause_list: // CFA |
---|
[4d51835] | 790 | case_label_list statement_list |
---|
[e82aa9df] | 791 | { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); } |
---|
[4d51835] | 792 | | switch_clause_list case_label_list statement_list |
---|
[e82aa9df] | 793 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); } |
---|
[4d51835] | 794 | ; |
---|
[b87a5ed] | 795 | |
---|
| 796 | choose_clause_list_opt: // CFA |
---|
[4d51835] | 797 | // empty |
---|
| 798 | { $$ = 0; } |
---|
| 799 | | choose_clause_list |
---|
| 800 | ; |
---|
[b87a5ed] | 801 | |
---|
| 802 | choose_clause_list: // CFA |
---|
[4d51835] | 803 | case_label_list fall_through |
---|
[de62360d] | 804 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 805 | | case_label_list statement_list fall_through_opt |
---|
[e82aa9df] | 806 | { $$ = $1->append_last_case( new StatementNode( build_compound( (StatementNode *)$2->set_last( $3 ) ) ) ); } |
---|
[4d51835] | 807 | | choose_clause_list case_label_list fall_through |
---|
[1d4580a] | 808 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 809 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
[e82aa9df] | 810 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( (StatementNode *)$3->set_last( $4 ) ) ) ) ) ); } |
---|
[4d51835] | 811 | ; |
---|
[b87a5ed] | 812 | |
---|
| 813 | fall_through_opt: // CFA |
---|
[4d51835] | 814 | // empty |
---|
[ab57786] | 815 | { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } // insert implicit break |
---|
[4d51835] | 816 | | fall_through |
---|
| 817 | ; |
---|
[b87a5ed] | 818 | |
---|
| 819 | fall_through: // CFA |
---|
[4e06c1e] | 820 | FALLTHRU |
---|
| 821 | { $$ = 0; } |
---|
| 822 | | FALLTHRU ';' |
---|
| 823 | { $$ = 0; } |
---|
[4d51835] | 824 | ; |
---|
[51b7345] | 825 | |
---|
| 826 | iteration_statement: |
---|
[4d51835] | 827 | WHILE '(' comma_expression ')' statement |
---|
[e82aa9df] | 828 | { $$ = new StatementNode( build_while( $3, $5 ) ); } |
---|
[4d51835] | 829 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
[5b639ee] | 830 | { $$ = new StatementNode( build_while( $5, $2, true ) ); } |
---|
[4d51835] | 831 | | FOR '(' push for_control_expression ')' statement |
---|
[e82aa9df] | 832 | { $$ = new StatementNode( build_for( $4, $6 ) ); } |
---|
[4d51835] | 833 | ; |
---|
[51b7345] | 834 | |
---|
| 835 | for_control_expression: |
---|
[4d51835] | 836 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
[2f22cc4] | 837 | { $$ = new ForCtl( $1, $4, $6 ); } |
---|
[4d51835] | 838 | | declaration comma_expression_opt ';' comma_expression_opt // C99 |
---|
[2f22cc4] | 839 | { $$ = new ForCtl( $1, $2, $4 ); } |
---|
[d1625f8] | 840 | ; |
---|
[51b7345] | 841 | |
---|
| 842 | jump_statement: |
---|
[c6b1105] | 843 | GOTO IDENTIFIER ';' |
---|
[ab57786] | 844 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); } |
---|
[4d51835] | 845 | | GOTO '*' comma_expression ';' // GCC, computed goto |
---|
[4e06c1e] | 846 | // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3); |
---|
[de62360d] | 847 | // whereas normal operator precedence yields goto (*i)+3; |
---|
[e82aa9df] | 848 | { $$ = new StatementNode( build_computedgoto( $3 ) ); } |
---|
[4d51835] | 849 | | CONTINUE ';' |
---|
[de62360d] | 850 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[ab57786] | 851 | { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); } |
---|
[4e06c1e] | 852 | | CONTINUE IDENTIFIER ';' // CFA, multi-level continue |
---|
[de62360d] | 853 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 854 | // the target of the transfer appears only at the start of an iteration statement. |
---|
[ab57786] | 855 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); } |
---|
[4d51835] | 856 | | BREAK ';' |
---|
[de62360d] | 857 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[ab57786] | 858 | { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } |
---|
[4e06c1e] | 859 | | BREAK IDENTIFIER ';' // CFA, multi-level exit |
---|
[de62360d] | 860 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 861 | // the target of the transfer appears only at the start of an iteration statement. |
---|
[ab57786] | 862 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); } |
---|
[4d51835] | 863 | | RETURN comma_expression_opt ';' |
---|
[e82aa9df] | 864 | { $$ = new StatementNode( build_return( $2 ) ); } |
---|
[8cc5cb0] | 865 | | THROW assignment_expression_opt ';' // handles rethrow |
---|
[e82aa9df] | 866 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[8cc5cb0] | 867 | | THROWRESUME assignment_expression_opt ';' // handles reresume |
---|
[e82aa9df] | 868 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[8cc5cb0] | 869 | | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume |
---|
[e82aa9df] | 870 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[4d51835] | 871 | ; |
---|
[51b7345] | 872 | |
---|
| 873 | exception_statement: |
---|
[4d51835] | 874 | TRY compound_statement handler_list |
---|
[e82aa9df] | 875 | { $$ = new StatementNode( build_try( $2, $3, 0 ) ); } |
---|
[4d51835] | 876 | | TRY compound_statement finally_clause |
---|
[e82aa9df] | 877 | { $$ = new StatementNode( build_try( $2, 0, $3 ) ); } |
---|
[4d51835] | 878 | | TRY compound_statement handler_list finally_clause |
---|
[e82aa9df] | 879 | { $$ = new StatementNode( build_try( $2, $3, $4 ) ); } |
---|
[4d51835] | 880 | ; |
---|
[51b7345] | 881 | |
---|
| 882 | handler_list: |
---|
[4d51835] | 883 | handler_clause |
---|
[de62360d] | 884 | // ISO/IEC 9899:1999 Section 15.3(6 ) If present, a "..." handler shall be the last handler for its try block. |
---|
[4d51835] | 885 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 886 | { $$ = new StatementNode( build_catch( 0, $5, true ) ); } |
---|
[4d51835] | 887 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 888 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( 0, $6, true ) ) ); } |
---|
[02e5ab6] | 889 | | CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 890 | { $$ = new StatementNode( build_catch( 0, $5, true ) ); } |
---|
[02e5ab6] | 891 | | handler_clause CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 892 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( 0, $6, true ) ) ); } |
---|
[4d51835] | 893 | ; |
---|
[51b7345] | 894 | |
---|
| 895 | handler_clause: |
---|
[4d51835] | 896 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 897 | { $$ = new StatementNode( build_catch( $5, $8 ) ); } |
---|
[4d51835] | 898 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[1b77274] | 899 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $6, $9 ) ) ); } |
---|
[02e5ab6] | 900 | | CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 901 | { $$ = new StatementNode( build_catch( $5, $8 ) ); } |
---|
[02e5ab6] | 902 | | handler_clause CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 903 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $6, $9 ) ) ); } |
---|
[4d51835] | 904 | ; |
---|
[51b7345] | 905 | |
---|
| 906 | finally_clause: |
---|
[4d51835] | 907 | FINALLY compound_statement |
---|
| 908 | { |
---|
[e82aa9df] | 909 | $$ = new StatementNode( build_finally( $2 ) ); |
---|
[4d51835] | 910 | } |
---|
| 911 | ; |
---|
[51b7345] | 912 | |
---|
| 913 | exception_declaration: |
---|
[4d51835] | 914 | // A semantic check is required to ensure type_specifier does not create a new type, e.g.: |
---|
| 915 | // |
---|
| 916 | // catch ( struct { int i; } x ) ... |
---|
| 917 | // |
---|
| 918 | // This new type cannot catch any thrown type because of name equivalence among types. |
---|
| 919 | type_specifier |
---|
| 920 | | type_specifier declarator |
---|
| 921 | { |
---|
| 922 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 923 | $$ = $2->addType( $1 ); |
---|
| 924 | } |
---|
| 925 | | type_specifier variable_abstract_declarator |
---|
| 926 | { $$ = $2->addType( $1 ); } |
---|
| 927 | | new_abstract_declarator_tuple no_attr_identifier // CFA |
---|
| 928 | { |
---|
| 929 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 930 | $$ = $1->addName( $2 ); |
---|
| 931 | } |
---|
| 932 | | new_abstract_declarator_tuple // CFA |
---|
| 933 | ; |
---|
[51b7345] | 934 | |
---|
| 935 | asm_statement: |
---|
[ab57786] | 936 | ASM asm_volatile_opt '(' string_literal ')' ';' |
---|
[e82aa9df] | 937 | { $$ = new StatementNode( build_asmstmt( $2, $4, 0 ) ); } |
---|
[ab57786] | 938 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC |
---|
[e82aa9df] | 939 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6 ) ); } |
---|
[ab57786] | 940 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
[e82aa9df] | 941 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8 ) ); } |
---|
[ab57786] | 942 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';' |
---|
[e82aa9df] | 943 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8, $10 ) ); } |
---|
[ab57786] | 944 | | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';' |
---|
[e82aa9df] | 945 | { $$ = new StatementNode( build_asmstmt( $2, $5, 0, $8, $10, $12 ) ); } |
---|
[7f5566b] | 946 | ; |
---|
| 947 | |
---|
| 948 | asm_volatile_opt: // GCC |
---|
| 949 | // empty |
---|
| 950 | { $$ = false; } |
---|
| 951 | | VOLATILE |
---|
| 952 | { $$ = true; } |
---|
[4d51835] | 953 | ; |
---|
[b87a5ed] | 954 | |
---|
| 955 | asm_operands_opt: // GCC |
---|
[4d51835] | 956 | // empty |
---|
[7f5566b] | 957 | { $$ = 0; } // use default argument |
---|
[4d51835] | 958 | | asm_operands_list |
---|
| 959 | ; |
---|
[b87a5ed] | 960 | |
---|
| 961 | asm_operands_list: // GCC |
---|
[4d51835] | 962 | asm_operand |
---|
| 963 | | asm_operands_list ',' asm_operand |
---|
[1d4580a] | 964 | { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 965 | ; |
---|
[b87a5ed] | 966 | |
---|
| 967 | asm_operand: // GCC |
---|
[ab57786] | 968 | string_literal '(' constant_expression ')' |
---|
[e82aa9df] | 969 | { $$ = new ExpressionNode( build_asmexpr( 0, $1, $3 ) ); } |
---|
[ab57786] | 970 | | '[' constant_expression ']' string_literal '(' constant_expression ')' |
---|
[1b77274] | 971 | { $$ = new ExpressionNode( build_asmexpr( $2, $4, $6 ) ); } |
---|
[7f5566b] | 972 | ; |
---|
| 973 | |
---|
[4e06c1e] | 974 | asm_clobbers_list_opt: // GCC |
---|
[7f5566b] | 975 | // empty |
---|
| 976 | { $$ = 0; } // use default argument |
---|
[ab57786] | 977 | | string_literal |
---|
[d1625f8] | 978 | { $$ = new ExpressionNode( $1 ); } |
---|
[ab57786] | 979 | | asm_clobbers_list_opt ',' string_literal |
---|
[e82aa9df] | 980 | { $$ = (ExpressionNode *)$1->set_last( new ExpressionNode( $3 ) ); } |
---|
[4d51835] | 981 | ; |
---|
[b87a5ed] | 982 | |
---|
[7f5566b] | 983 | label_list: |
---|
| 984 | no_attr_identifier |
---|
[ab57786] | 985 | { |
---|
| 986 | $$ = new LabelNode(); $$->labels.push_back( *$1 ); |
---|
| 987 | delete $1; // allocated by lexer |
---|
| 988 | } |
---|
[7f5566b] | 989 | | label_list ',' no_attr_identifier |
---|
[ab57786] | 990 | { |
---|
| 991 | $$ = $1; $1->labels.push_back( *$3 ); |
---|
| 992 | delete $3; // allocated by lexer |
---|
| 993 | } |
---|
[4d51835] | 994 | ; |
---|
[51b7345] | 995 | |
---|
[c11e31c] | 996 | //******************************* DECLARATIONS ********************************* |
---|
[51b7345] | 997 | |
---|
[b87a5ed] | 998 | declaration_list_opt: // used at beginning of switch statement |
---|
[4d51835] | 999 | pop |
---|
| 1000 | { $$ = 0; } |
---|
| 1001 | | declaration_list |
---|
| 1002 | ; |
---|
[51b7345] | 1003 | |
---|
| 1004 | declaration_list: |
---|
[4d51835] | 1005 | declaration |
---|
| 1006 | | declaration_list push declaration |
---|
| 1007 | { $$ = $1->appendList( $3 ); } |
---|
| 1008 | ; |
---|
[51b7345] | 1009 | |
---|
[b87a5ed] | 1010 | old_declaration_list_opt: // used to declare parameter types in K&R style functions |
---|
[4d51835] | 1011 | pop |
---|
| 1012 | { $$ = 0; } |
---|
| 1013 | | old_declaration_list |
---|
| 1014 | ; |
---|
[51b7345] | 1015 | |
---|
| 1016 | old_declaration_list: |
---|
[4d51835] | 1017 | old_declaration |
---|
| 1018 | | old_declaration_list push old_declaration |
---|
| 1019 | { $$ = $1->appendList( $3 ); } |
---|
| 1020 | ; |
---|
[b87a5ed] | 1021 | |
---|
[51b1202] | 1022 | local_label_declaration_opt: // GCC, local label |
---|
[4d51835] | 1023 | // empty |
---|
[51b1202] | 1024 | | local_label_declaration_list |
---|
[4d51835] | 1025 | ; |
---|
[b87a5ed] | 1026 | |
---|
[51b1202] | 1027 | local_label_declaration_list: // GCC, local label |
---|
| 1028 | LABEL local_label_list ';' |
---|
| 1029 | | local_label_declaration_list LABEL local_label_list ';' |
---|
[4d51835] | 1030 | ; |
---|
[b87a5ed] | 1031 | |
---|
[51b1202] | 1032 | local_label_list: // GCC, local label |
---|
[7f5566b] | 1033 | no_attr_identifier_or_type_name {} |
---|
[51b1202] | 1034 | | local_label_list ',' no_attr_identifier_or_type_name {} |
---|
[4d51835] | 1035 | ; |
---|
[b87a5ed] | 1036 | |
---|
| 1037 | declaration: // CFA, new & old style declarations |
---|
[4d51835] | 1038 | new_declaration |
---|
| 1039 | | old_declaration |
---|
| 1040 | ; |
---|
[b87a5ed] | 1041 | |
---|
[de62360d] | 1042 | // C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function |
---|
| 1043 | // declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to |
---|
| 1044 | // the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration |
---|
| 1045 | // modifiers are interpreted from left to right and the entire type specification is distributed across all variables in |
---|
| 1046 | // the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program |
---|
| 1047 | // block, but cannot be mixed within a specific declaration. |
---|
[c11e31c] | 1048 | // |
---|
[b87a5ed] | 1049 | // CFA C |
---|
| 1050 | // [10] int x; int x[10]; // array of 10 integers |
---|
| 1051 | // [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
| 1052 | |
---|
| 1053 | new_declaration: // CFA |
---|
[4d51835] | 1054 | new_variable_declaration pop ';' |
---|
| 1055 | | new_typedef_declaration pop ';' |
---|
| 1056 | | new_function_declaration pop ';' |
---|
| 1057 | | type_declaring_list pop ';' |
---|
[4040425] | 1058 | | trait_specifier pop ';' |
---|
[4d51835] | 1059 | ; |
---|
[b87a5ed] | 1060 | |
---|
| 1061 | new_variable_declaration: // CFA |
---|
[4d51835] | 1062 | new_variable_specifier initializer_opt |
---|
| 1063 | { |
---|
| 1064 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1065 | $$ = $1->addInitializer( $2 ); |
---|
[4d51835] | 1066 | } |
---|
| 1067 | | declaration_qualifier_list new_variable_specifier initializer_opt |
---|
[de62360d] | 1068 | // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude |
---|
| 1069 | // them as a type_qualifier cannot appear in that context. |
---|
[4d51835] | 1070 | { |
---|
| 1071 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1072 | $$ = $2->addQualifiers( $1 )->addInitializer( $3 );; |
---|
[4d51835] | 1073 | } |
---|
[2871210] | 1074 | | new_variable_declaration pop ',' push identifier_or_type_name initializer_opt |
---|
[4d51835] | 1075 | { |
---|
| 1076 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
[3cfe27f] | 1077 | $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); |
---|
[4d51835] | 1078 | } |
---|
| 1079 | ; |
---|
[b87a5ed] | 1080 | |
---|
| 1081 | new_variable_specifier: // CFA |
---|
[de62360d] | 1082 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1083 | // storage-class |
---|
[2871210] | 1084 | new_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1085 | { |
---|
| 1086 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1087 | $$ = $1->addName( $2 ); |
---|
| 1088 | } |
---|
[2871210] | 1089 | | new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1090 | { |
---|
| 1091 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1092 | $$ = $1->addName( $2 ); |
---|
| 1093 | } |
---|
[2871210] | 1094 | | type_qualifier_list new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1095 | { |
---|
| 1096 | typedefTable.setNextIdentifier( *$3 ); |
---|
| 1097 | $$ = $2->addQualifiers( $1 )->addName( $3 ); |
---|
| 1098 | } |
---|
| 1099 | ; |
---|
[b87a5ed] | 1100 | |
---|
| 1101 | new_function_declaration: // CFA |
---|
[4d51835] | 1102 | new_function_specifier |
---|
| 1103 | { |
---|
| 1104 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1105 | $$ = $1; |
---|
| 1106 | } |
---|
| 1107 | | type_qualifier_list new_function_specifier |
---|
| 1108 | { |
---|
| 1109 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1110 | $$ = $2->addQualifiers( $1 ); |
---|
| 1111 | } |
---|
| 1112 | | declaration_qualifier_list new_function_specifier |
---|
| 1113 | { |
---|
| 1114 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1115 | $$ = $2->addQualifiers( $1 ); |
---|
| 1116 | } |
---|
| 1117 | | declaration_qualifier_list type_qualifier_list new_function_specifier |
---|
| 1118 | { |
---|
| 1119 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1120 | $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); |
---|
| 1121 | } |
---|
[2871210] | 1122 | | new_function_declaration pop ',' push identifier_or_type_name |
---|
[4d51835] | 1123 | { |
---|
| 1124 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 1125 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1126 | } |
---|
| 1127 | ; |
---|
[b87a5ed] | 1128 | |
---|
| 1129 | new_function_specifier: // CFA |
---|
[2871210] | 1130 | '[' ']' identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' // S/R conflict |
---|
[4d51835] | 1131 | { |
---|
[2871210] | 1132 | $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true ); |
---|
[4d51835] | 1133 | } |
---|
[2871210] | 1134 | // '[' ']' identifier '(' push new_parameter_type_list_opt pop ')' |
---|
| 1135 | // { |
---|
| 1136 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1137 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1138 | // } |
---|
| 1139 | // | '[' ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')' |
---|
| 1140 | // { |
---|
| 1141 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1142 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1143 | // } |
---|
| 1144 | // | '[' ']' typegen_name |
---|
| 1145 | // identifier_or_type_name must be broken apart because of the sequence: |
---|
[4d51835] | 1146 | // |
---|
[2871210] | 1147 | // '[' ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[4d51835] | 1148 | // '[' ']' type_specifier |
---|
| 1149 | // |
---|
[2871210] | 1150 | // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be |
---|
| 1151 | // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name. |
---|
| 1152 | | new_abstract_tuple identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[de62360d] | 1153 | // To obtain LR(1 ), this rule must be factored out from function return type (see new_abstract_declarator). |
---|
[4d51835] | 1154 | { |
---|
| 1155 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1156 | } |
---|
[2871210] | 1157 | | new_function_return identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[4d51835] | 1158 | { |
---|
| 1159 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1160 | } |
---|
| 1161 | ; |
---|
[b87a5ed] | 1162 | |
---|
| 1163 | new_function_return: // CFA |
---|
[4d51835] | 1164 | '[' push new_parameter_list pop ']' |
---|
| 1165 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 1166 | | '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']' |
---|
[de62360d] | 1167 | // To obtain LR(1 ), the last new_abstract_parameter_list is added into this flattened rule to lookahead to the |
---|
| 1168 | // ']'. |
---|
[4d51835] | 1169 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
| 1170 | ; |
---|
[b87a5ed] | 1171 | |
---|
| 1172 | new_typedef_declaration: // CFA |
---|
[4d51835] | 1173 | TYPEDEF new_variable_specifier |
---|
| 1174 | { |
---|
[de62360d] | 1175 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1176 | $$ = $2->addTypedef(); |
---|
| 1177 | } |
---|
| 1178 | | TYPEDEF new_function_specifier |
---|
| 1179 | { |
---|
[de62360d] | 1180 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1181 | $$ = $2->addTypedef(); |
---|
| 1182 | } |
---|
| 1183 | | new_typedef_declaration pop ',' push no_attr_identifier |
---|
| 1184 | { |
---|
[de62360d] | 1185 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1186 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1187 | } |
---|
| 1188 | ; |
---|
[b87a5ed] | 1189 | |
---|
[de62360d] | 1190 | // Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as |
---|
| 1191 | // a separate form of declaration, which syntactically precludes storage-class specifiers and initialization. |
---|
[51b7345] | 1192 | |
---|
| 1193 | typedef_declaration: |
---|
[4d51835] | 1194 | TYPEDEF type_specifier declarator |
---|
| 1195 | { |
---|
[de62360d] | 1196 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1197 | $$ = $3->addType( $2 )->addTypedef(); |
---|
| 1198 | } |
---|
| 1199 | | typedef_declaration pop ',' push declarator |
---|
| 1200 | { |
---|
[de62360d] | 1201 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1202 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
| 1203 | } |
---|
[de62360d] | 1204 | | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1205 | { |
---|
[de62360d] | 1206 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1207 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
| 1208 | } |
---|
| 1209 | | type_specifier TYPEDEF declarator |
---|
| 1210 | { |
---|
[de62360d] | 1211 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1212 | $$ = $3->addType( $1 )->addTypedef(); |
---|
| 1213 | } |
---|
| 1214 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
| 1215 | { |
---|
[de62360d] | 1216 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
| 1217 | $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 ); |
---|
[4d51835] | 1218 | } |
---|
| 1219 | ; |
---|
[b87a5ed] | 1220 | |
---|
[721f17a] | 1221 | typedef_expression: |
---|
| 1222 | // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression |
---|
[4d51835] | 1223 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
| 1224 | { |
---|
[de62360d] | 1225 | typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); |
---|
[4d51835] | 1226 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1227 | } |
---|
| 1228 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
| 1229 | { |
---|
[de62360d] | 1230 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1231 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1232 | } |
---|
| 1233 | ; |
---|
[51b7345] | 1234 | |
---|
| 1235 | old_declaration: |
---|
[4d51835] | 1236 | declaring_list pop ';' |
---|
| 1237 | | typedef_declaration pop ';' |
---|
| 1238 | | typedef_expression pop ';' // GCC, naming expression type |
---|
| 1239 | | sue_declaration_specifier pop ';' |
---|
| 1240 | ; |
---|
[51b7345] | 1241 | |
---|
| 1242 | declaring_list: |
---|
[de62360d] | 1243 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1244 | // storage-class |
---|
[4d51835] | 1245 | declaration_specifier declarator asm_name_opt initializer_opt |
---|
| 1246 | { |
---|
| 1247 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1248 | $$ = ( $2->addType( $1 ))->addInitializer( $4 ); |
---|
[4d51835] | 1249 | } |
---|
| 1250 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1251 | { |
---|
| 1252 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1253 | $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer( $6 ) ) ); |
---|
[4d51835] | 1254 | } |
---|
| 1255 | ; |
---|
[b87a5ed] | 1256 | |
---|
| 1257 | declaration_specifier: // type specifier + storage class |
---|
[4d51835] | 1258 | basic_declaration_specifier |
---|
| 1259 | | sue_declaration_specifier |
---|
| 1260 | | typedef_declaration_specifier |
---|
| 1261 | | typegen_declaration_specifier |
---|
| 1262 | ; |
---|
[b87a5ed] | 1263 | |
---|
| 1264 | type_specifier: // declaration specifier - storage class |
---|
[4d51835] | 1265 | basic_type_specifier |
---|
| 1266 | | sue_type_specifier |
---|
| 1267 | | typedef_type_specifier |
---|
| 1268 | | typegen_type_specifier |
---|
| 1269 | ; |
---|
[b87a5ed] | 1270 | |
---|
| 1271 | type_qualifier_list_opt: // GCC, used in asm_statement |
---|
[4d51835] | 1272 | // empty |
---|
| 1273 | { $$ = 0; } |
---|
| 1274 | | type_qualifier_list |
---|
| 1275 | ; |
---|
[51b7345] | 1276 | |
---|
| 1277 | type_qualifier_list: |
---|
[de62360d] | 1278 | // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration. |
---|
[4d51835] | 1279 | // |
---|
[de62360d] | 1280 | // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same |
---|
| 1281 | // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it |
---|
| 1282 | // appeared only once. |
---|
[4d51835] | 1283 | type_qualifier |
---|
| 1284 | | type_qualifier_list type_qualifier |
---|
| 1285 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1286 | ; |
---|
[51b7345] | 1287 | |
---|
| 1288 | type_qualifier: |
---|
[4d51835] | 1289 | type_qualifier_name |
---|
| 1290 | | attribute |
---|
[c1c1112] | 1291 | //{ $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
[4d51835] | 1292 | ; |
---|
[51b7345] | 1293 | |
---|
| 1294 | type_qualifier_name: |
---|
[4d51835] | 1295 | CONST |
---|
| 1296 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
| 1297 | | RESTRICT |
---|
| 1298 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); } |
---|
| 1299 | | VOLATILE |
---|
| 1300 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); } |
---|
| 1301 | | LVALUE // CFA |
---|
| 1302 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); } |
---|
| 1303 | | ATOMIC |
---|
| 1304 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); } |
---|
| 1305 | | FORALL '(' |
---|
| 1306 | { |
---|
| 1307 | typedefTable.enterScope(); |
---|
| 1308 | } |
---|
| 1309 | type_parameter_list ')' // CFA |
---|
| 1310 | { |
---|
| 1311 | typedefTable.leaveScope(); |
---|
| 1312 | $$ = DeclarationNode::newForall( $4 ); |
---|
| 1313 | } |
---|
| 1314 | ; |
---|
[51b7345] | 1315 | |
---|
| 1316 | declaration_qualifier_list: |
---|
[4d51835] | 1317 | storage_class_list |
---|
[de62360d] | 1318 | | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1319 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1320 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
| 1321 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1322 | ; |
---|
[51b7345] | 1323 | |
---|
| 1324 | storage_class_list: |
---|
[de62360d] | 1325 | // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that |
---|
| 1326 | // only one of each is specified, except for inline, which can appear with the others. |
---|
[4d51835] | 1327 | // |
---|
[de62360d] | 1328 | // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration |
---|
| 1329 | // specifiers in a declaration. |
---|
[4d51835] | 1330 | storage_class |
---|
| 1331 | | storage_class_list storage_class |
---|
| 1332 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1333 | ; |
---|
[51b7345] | 1334 | |
---|
| 1335 | storage_class: |
---|
[4d51835] | 1336 | EXTERN |
---|
| 1337 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); } |
---|
| 1338 | | STATIC |
---|
| 1339 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); } |
---|
| 1340 | | AUTO |
---|
| 1341 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); } |
---|
| 1342 | | REGISTER |
---|
| 1343 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); } |
---|
| 1344 | | INLINE // C99 |
---|
[c1c1112] | 1345 | //{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); } |
---|
| 1346 | { $$ = new DeclarationNode; $$->isInline = true; } |
---|
[4d51835] | 1347 | | FORTRAN // C99 |
---|
| 1348 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); } |
---|
[68cd1ce] | 1349 | | NORETURN // C11 |
---|
[c1c1112] | 1350 | //{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Noreturn ); } |
---|
| 1351 | { $$ = new DeclarationNode; $$->isNoreturn = true; } |
---|
[68cd1ce] | 1352 | | THREADLOCAL // C11 |
---|
| 1353 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Threadlocal ); } |
---|
[4d51835] | 1354 | ; |
---|
[51b7345] | 1355 | |
---|
| 1356 | basic_type_name: |
---|
[4d51835] | 1357 | CHAR |
---|
| 1358 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
| 1359 | | DOUBLE |
---|
| 1360 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
| 1361 | | FLOAT |
---|
| 1362 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
| 1363 | | INT |
---|
| 1364 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
| 1365 | | LONG |
---|
[5b639ee] | 1366 | { $$ = DeclarationNode::newLength( DeclarationNode::Long ); } |
---|
[4d51835] | 1367 | | SHORT |
---|
[5b639ee] | 1368 | { $$ = DeclarationNode::newLength( DeclarationNode::Short ); } |
---|
[4d51835] | 1369 | | SIGNED |
---|
[5b639ee] | 1370 | { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); } |
---|
[4d51835] | 1371 | | UNSIGNED |
---|
[5b639ee] | 1372 | { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); } |
---|
[4d51835] | 1373 | | VOID |
---|
| 1374 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
| 1375 | | BOOL // C99 |
---|
| 1376 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
| 1377 | | COMPLEX // C99 |
---|
[5b639ee] | 1378 | { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); } |
---|
[4d51835] | 1379 | | IMAGINARY // C99 |
---|
[5b639ee] | 1380 | { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); } |
---|
[90c3b1c] | 1381 | | VALIST // GCC, __builtin_va_list |
---|
| 1382 | { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); } |
---|
[4d51835] | 1383 | ; |
---|
[51b7345] | 1384 | |
---|
| 1385 | basic_declaration_specifier: |
---|
[4d51835] | 1386 | // A semantic check is necessary for conflicting storage classes. |
---|
| 1387 | basic_type_specifier |
---|
| 1388 | | declaration_qualifier_list basic_type_specifier |
---|
| 1389 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1390 | | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1391 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1392 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
| 1393 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1394 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
| 1395 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
| 1396 | ; |
---|
[51b7345] | 1397 | |
---|
| 1398 | basic_type_specifier: |
---|
[4d51835] | 1399 | direct_type_name |
---|
| 1400 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
| 1401 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
| 1402 | ; |
---|
[51b7345] | 1403 | |
---|
| 1404 | direct_type_name: |
---|
[4d51835] | 1405 | // A semantic check is necessary for conflicting type qualifiers. |
---|
| 1406 | basic_type_name |
---|
| 1407 | | type_qualifier_list basic_type_name |
---|
| 1408 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1409 | | direct_type_name type_qualifier |
---|
| 1410 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1411 | | direct_type_name basic_type_name |
---|
| 1412 | { $$ = $1->addType( $2 ); } |
---|
| 1413 | ; |
---|
[51b7345] | 1414 | |
---|
| 1415 | indirect_type_name: |
---|
[4d51835] | 1416 | TYPEOF '(' type_name ')' // GCC: typeof(x) y; |
---|
| 1417 | { $$ = $3; } |
---|
| 1418 | | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y; |
---|
| 1419 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
| 1420 | | ATTR_TYPEGENname '(' type_name ')' // CFA: e.g., @type(x) y; |
---|
| 1421 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1422 | | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y; |
---|
| 1423 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1424 | ; |
---|
[51b7345] | 1425 | |
---|
| 1426 | sue_declaration_specifier: |
---|
[4d51835] | 1427 | sue_type_specifier |
---|
| 1428 | | declaration_qualifier_list sue_type_specifier |
---|
| 1429 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1430 | | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1431 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1432 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
| 1433 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1434 | ; |
---|
[51b7345] | 1435 | |
---|
| 1436 | sue_type_specifier: |
---|
[4d51835] | 1437 | elaborated_type_name // struct, union, enum |
---|
| 1438 | | type_qualifier_list elaborated_type_name |
---|
| 1439 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1440 | | sue_type_specifier type_qualifier |
---|
| 1441 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1442 | ; |
---|
[51b7345] | 1443 | |
---|
| 1444 | typedef_declaration_specifier: |
---|
[4d51835] | 1445 | typedef_type_specifier |
---|
| 1446 | | declaration_qualifier_list typedef_type_specifier |
---|
| 1447 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1448 | | typedef_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1449 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1450 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
| 1451 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1452 | ; |
---|
[b87a5ed] | 1453 | |
---|
| 1454 | typedef_type_specifier: // typedef types |
---|
[4d51835] | 1455 | TYPEDEFname |
---|
| 1456 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
| 1457 | | type_qualifier_list TYPEDEFname |
---|
| 1458 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
| 1459 | | typedef_type_specifier type_qualifier |
---|
| 1460 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1461 | ; |
---|
[51b7345] | 1462 | |
---|
| 1463 | elaborated_type_name: |
---|
[4d51835] | 1464 | aggregate_name |
---|
| 1465 | | enum_name |
---|
| 1466 | ; |
---|
[51b7345] | 1467 | |
---|
| 1468 | aggregate_name: |
---|
[4d51835] | 1469 | aggregate_key '{' field_declaration_list '}' |
---|
[2298f728] | 1470 | { $$ = DeclarationNode::newAggregate( $1, nullptr, nullptr, $3, true ); } |
---|
[2871210] | 1471 | | aggregate_key no_attr_identifier_or_type_name |
---|
[45161b4d] | 1472 | { |
---|
| 1473 | typedefTable.makeTypedef( *$2 ); |
---|
[2298f728] | 1474 | $$ = DeclarationNode::newAggregate( $1, $2, nullptr, nullptr, false ); |
---|
[45161b4d] | 1475 | } |
---|
| 1476 | | aggregate_key no_attr_identifier_or_type_name |
---|
| 1477 | { typedefTable.makeTypedef( *$2 ); } |
---|
| 1478 | '{' field_declaration_list '}' |
---|
[1b77274] | 1479 | { $$ = DeclarationNode::newAggregate( $1, $2, nullptr, $5, true ); } |
---|
[721f17a] | 1480 | | aggregate_key '(' type_name_list ')' '{' field_declaration_list '}' // CFA |
---|
[2298f728] | 1481 | { $$ = DeclarationNode::newAggregate( $1, nullptr, $3, $6, false ); } |
---|
[2871210] | 1482 | | aggregate_key typegen_name // CFA, S/R conflict |
---|
| 1483 | { $$ = $2; } |
---|
[4d51835] | 1484 | ; |
---|
[51b7345] | 1485 | |
---|
| 1486 | aggregate_key: |
---|
[4d51835] | 1487 | STRUCT attribute_list_opt |
---|
| 1488 | { $$ = DeclarationNode::Struct; } |
---|
| 1489 | | UNION attribute_list_opt |
---|
| 1490 | { $$ = DeclarationNode::Union; } |
---|
| 1491 | ; |
---|
[51b7345] | 1492 | |
---|
| 1493 | field_declaration_list: |
---|
[5d125e4] | 1494 | // empty |
---|
| 1495 | { $$ = 0; } |
---|
[4d51835] | 1496 | | field_declaration_list field_declaration |
---|
[5d125e4] | 1497 | { $$ = $1 != 0 ? $1->appendList( $2 ) : $2; } |
---|
[4d51835] | 1498 | ; |
---|
[51b7345] | 1499 | |
---|
| 1500 | field_declaration: |
---|
[4d51835] | 1501 | new_field_declaring_list ';' // CFA, new style field declaration |
---|
| 1502 | | EXTENSION new_field_declaring_list ';' // GCC |
---|
[ca35c51] | 1503 | { $$ = $2->set_extension( true ); } |
---|
[4d51835] | 1504 | | field_declaring_list ';' |
---|
| 1505 | | EXTENSION field_declaring_list ';' // GCC |
---|
[8e9cbb2] | 1506 | { // mark all fields in list |
---|
[926af74] | 1507 | for ( DeclarationNode *iter = $2; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) |
---|
[8e9cbb2] | 1508 | iter->set_extension( true ); |
---|
| 1509 | $$ = $2; |
---|
| 1510 | } |
---|
[4d51835] | 1511 | ; |
---|
[b87a5ed] | 1512 | |
---|
| 1513 | new_field_declaring_list: // CFA, new style field declaration |
---|
[4d51835] | 1514 | new_abstract_declarator_tuple // CFA, no field name |
---|
[2871210] | 1515 | | new_abstract_declarator_tuple no_attr_identifier_or_type_name |
---|
[4d51835] | 1516 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1517 | | new_field_declaring_list ',' no_attr_identifier_or_type_name |
---|
[4d51835] | 1518 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
| 1519 | | new_field_declaring_list ',' // CFA, no field name |
---|
| 1520 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
| 1521 | ; |
---|
[51b7345] | 1522 | |
---|
| 1523 | field_declaring_list: |
---|
[4d51835] | 1524 | type_specifier field_declarator |
---|
| 1525 | { $$ = $2->addType( $1 ); } |
---|
| 1526 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
| 1527 | { $$ = $1->appendList( $1->cloneBaseType( $4 ) ); } |
---|
| 1528 | ; |
---|
[51b7345] | 1529 | |
---|
| 1530 | field_declarator: |
---|
[4d51835] | 1531 | // empty |
---|
| 1532 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name |
---|
| 1533 | | bit_subrange_size // no field name |
---|
| 1534 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
| 1535 | | variable_declarator bit_subrange_size_opt |
---|
| 1536 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1537 | { $$ = $1->addBitfield( $2 ); } |
---|
[c6b1105] | 1538 | | variable_type_redeclarator bit_subrange_size_opt |
---|
[4d51835] | 1539 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1540 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1541 | | variable_abstract_declarator // CFA, no field name |
---|
| 1542 | ; |
---|
[51b7345] | 1543 | |
---|
| 1544 | bit_subrange_size_opt: |
---|
[4d51835] | 1545 | // empty |
---|
| 1546 | { $$ = 0; } |
---|
| 1547 | | bit_subrange_size |
---|
| 1548 | { $$ = $1; } |
---|
| 1549 | ; |
---|
[51b7345] | 1550 | |
---|
| 1551 | bit_subrange_size: |
---|
[4d51835] | 1552 | ':' constant_expression |
---|
| 1553 | { $$ = $2; } |
---|
| 1554 | ; |
---|
[51b7345] | 1555 | |
---|
| 1556 | enum_key: |
---|
[4d51835] | 1557 | ENUM attribute_list_opt |
---|
| 1558 | ; |
---|
[51b7345] | 1559 | |
---|
| 1560 | enum_name: |
---|
[4d51835] | 1561 | enum_key '{' enumerator_list comma_opt '}' |
---|
[2298f728] | 1562 | { $$ = DeclarationNode::newEnum( nullptr, $3 ); } |
---|
[2871210] | 1563 | | enum_key no_attr_identifier_or_type_name |
---|
[45161b4d] | 1564 | { |
---|
| 1565 | typedefTable.makeTypedef( *$2 ); |
---|
| 1566 | $$ = DeclarationNode::newEnum( $2, 0 ); |
---|
| 1567 | } |
---|
| 1568 | | enum_key no_attr_identifier_or_type_name |
---|
| 1569 | { typedefTable.makeTypedef( *$2 ); } |
---|
| 1570 | '{' enumerator_list comma_opt '}' |
---|
| 1571 | { $$ = DeclarationNode::newEnum( $2, $5 ); } |
---|
[4d51835] | 1572 | ; |
---|
[51b7345] | 1573 | |
---|
| 1574 | enumerator_list: |
---|
[2871210] | 1575 | no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1576 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
[2871210] | 1577 | | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1578 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
| 1579 | ; |
---|
[51b7345] | 1580 | |
---|
| 1581 | enumerator_value_opt: |
---|
[4d51835] | 1582 | // empty |
---|
| 1583 | { $$ = 0; } |
---|
| 1584 | | '=' constant_expression |
---|
| 1585 | { $$ = $2; } |
---|
| 1586 | ; |
---|
[51b7345] | 1587 | |
---|
[c11e31c] | 1588 | // Minimum of one parameter after which ellipsis is allowed only at the end. |
---|
[51b7345] | 1589 | |
---|
[b87a5ed] | 1590 | new_parameter_type_list_opt: // CFA |
---|
[4d51835] | 1591 | // empty |
---|
| 1592 | { $$ = 0; } |
---|
| 1593 | | new_parameter_type_list |
---|
| 1594 | ; |
---|
[b87a5ed] | 1595 | |
---|
| 1596 | new_parameter_type_list: // CFA, abstract + real |
---|
[4d51835] | 1597 | new_abstract_parameter_list |
---|
| 1598 | | new_parameter_list |
---|
| 1599 | | new_parameter_list pop ',' push new_abstract_parameter_list |
---|
| 1600 | { $$ = $1->appendList( $5 ); } |
---|
| 1601 | | new_abstract_parameter_list pop ',' push ELLIPSIS |
---|
| 1602 | { $$ = $1->addVarArgs(); } |
---|
| 1603 | | new_parameter_list pop ',' push ELLIPSIS |
---|
| 1604 | { $$ = $1->addVarArgs(); } |
---|
| 1605 | ; |
---|
[b87a5ed] | 1606 | |
---|
| 1607 | new_parameter_list: // CFA |
---|
[de62360d] | 1608 | // To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last new_abstract_parameter_list is |
---|
| 1609 | // factored out from new_parameter_list, flattening the rules to get lookahead to the ']'. |
---|
[4d51835] | 1610 | new_parameter_declaration |
---|
| 1611 | | new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1612 | { $$ = $1->appendList( $5 ); } |
---|
| 1613 | | new_parameter_list pop ',' push new_parameter_declaration |
---|
| 1614 | { $$ = $1->appendList( $5 ); } |
---|
| 1615 | | new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1616 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
| 1617 | ; |
---|
[b87a5ed] | 1618 | |
---|
| 1619 | new_abstract_parameter_list: // CFA, new & old style abstract |
---|
[4d51835] | 1620 | new_abstract_parameter_declaration |
---|
| 1621 | | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration |
---|
| 1622 | { $$ = $1->appendList( $5 ); } |
---|
| 1623 | ; |
---|
[51b7345] | 1624 | |
---|
| 1625 | parameter_type_list_opt: |
---|
[4d51835] | 1626 | // empty |
---|
| 1627 | { $$ = 0; } |
---|
| 1628 | | parameter_type_list |
---|
| 1629 | ; |
---|
[51b7345] | 1630 | |
---|
| 1631 | parameter_type_list: |
---|
[4d51835] | 1632 | parameter_list |
---|
| 1633 | | parameter_list pop ',' push ELLIPSIS |
---|
| 1634 | { $$ = $1->addVarArgs(); } |
---|
| 1635 | ; |
---|
[b87a5ed] | 1636 | |
---|
| 1637 | parameter_list: // abstract + real |
---|
[4d51835] | 1638 | abstract_parameter_declaration |
---|
| 1639 | | parameter_declaration |
---|
| 1640 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
| 1641 | { $$ = $1->appendList( $5 ); } |
---|
| 1642 | | parameter_list pop ',' push parameter_declaration |
---|
| 1643 | { $$ = $1->appendList( $5 ); } |
---|
| 1644 | ; |
---|
[51b7345] | 1645 | |
---|
[de62360d] | 1646 | // Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics |
---|
[2871210] | 1647 | // for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes. |
---|
[51b7345] | 1648 | |
---|
[b87a5ed] | 1649 | new_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1650 | parameter_declaration |
---|
[2871210] | 1651 | | new_identifier_parameter_declarator_no_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1652 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1653 | | new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1654 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1655 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1656 | | type_qualifier_list new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1657 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
| 1658 | | new_function_specifier |
---|
| 1659 | ; |
---|
[b87a5ed] | 1660 | |
---|
| 1661 | new_abstract_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1662 | abstract_parameter_declaration |
---|
| 1663 | | new_identifier_parameter_declarator_no_tuple |
---|
| 1664 | | new_abstract_tuple |
---|
| 1665 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1666 | | type_qualifier_list new_abstract_tuple |
---|
| 1667 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1668 | | new_abstract_function |
---|
| 1669 | ; |
---|
[51b7345] | 1670 | |
---|
| 1671 | parameter_declaration: |
---|
[4d51835] | 1672 | declaration_specifier identifier_parameter_declarator assignment_opt |
---|
| 1673 | { |
---|
| 1674 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1675 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1676 | } |
---|
[2871210] | 1677 | | declaration_specifier type_parameter_redeclarator assignment_opt |
---|
[4d51835] | 1678 | { |
---|
| 1679 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1680 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1681 | } |
---|
| 1682 | ; |
---|
[51b7345] | 1683 | |
---|
| 1684 | abstract_parameter_declaration: |
---|
[4d51835] | 1685 | declaration_specifier |
---|
| 1686 | | declaration_specifier abstract_parameter_declarator |
---|
| 1687 | { $$ = $2->addType( $1 ); } |
---|
| 1688 | ; |
---|
[51b7345] | 1689 | |
---|
[c11e31c] | 1690 | // ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
[de62360d] | 1691 | // parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on |
---|
| 1692 | // identifiers. The ANSI-style parameter-list can redefine a typedef name. |
---|
[51b7345] | 1693 | |
---|
[b87a5ed] | 1694 | identifier_list: // K&R-style parameter list => no types |
---|
[4d51835] | 1695 | no_attr_identifier |
---|
| 1696 | { $$ = DeclarationNode::newName( $1 ); } |
---|
| 1697 | | identifier_list ',' no_attr_identifier |
---|
| 1698 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
| 1699 | ; |
---|
[51b7345] | 1700 | |
---|
[2871210] | 1701 | identifier_or_type_name: |
---|
[4d51835] | 1702 | identifier |
---|
| 1703 | | TYPEDEFname |
---|
| 1704 | | TYPEGENname |
---|
| 1705 | ; |
---|
[51b7345] | 1706 | |
---|
[2871210] | 1707 | no_01_identifier_or_type_name: |
---|
[4d51835] | 1708 | no_01_identifier |
---|
| 1709 | | TYPEDEFname |
---|
| 1710 | | TYPEGENname |
---|
| 1711 | ; |
---|
[51b7345] | 1712 | |
---|
[2871210] | 1713 | no_attr_identifier_or_type_name: |
---|
[4d51835] | 1714 | no_attr_identifier |
---|
| 1715 | | TYPEDEFname |
---|
[721f17a] | 1716 | | TYPEGENname |
---|
[4d51835] | 1717 | ; |
---|
[b87a5ed] | 1718 | |
---|
| 1719 | type_name_no_function: // sizeof, alignof, cast (constructor) |
---|
[4d51835] | 1720 | new_abstract_declarator_tuple // CFA |
---|
| 1721 | | type_specifier |
---|
| 1722 | | type_specifier variable_abstract_declarator |
---|
| 1723 | { $$ = $2->addType( $1 ); } |
---|
| 1724 | ; |
---|
[b87a5ed] | 1725 | |
---|
| 1726 | type_name: // typeof, assertion |
---|
[4d51835] | 1727 | new_abstract_declarator_tuple // CFA |
---|
| 1728 | | new_abstract_function // CFA |
---|
| 1729 | | type_specifier |
---|
| 1730 | | type_specifier abstract_declarator |
---|
| 1731 | { $$ = $2->addType( $1 ); } |
---|
| 1732 | ; |
---|
[51b7345] | 1733 | |
---|
| 1734 | initializer_opt: |
---|
[4d51835] | 1735 | // empty |
---|
| 1736 | { $$ = 0; } |
---|
[2871210] | 1737 | | '=' initializer |
---|
| 1738 | { $$ = $2; } |
---|
[097e2b0] | 1739 | | ATassign initializer |
---|
[974906e2] | 1740 | { $$ = $2->set_maybeConstructed( false ); } |
---|
[4d51835] | 1741 | ; |
---|
[51b7345] | 1742 | |
---|
| 1743 | initializer: |
---|
[de62360d] | 1744 | assignment_expression { $$ = new InitializerNode( $1 ); } |
---|
| 1745 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); } |
---|
[4d51835] | 1746 | ; |
---|
[51b7345] | 1747 | |
---|
| 1748 | initializer_list: |
---|
[097e2b0] | 1749 | // empty |
---|
| 1750 | { $$ = 0; } |
---|
| 1751 | | initializer |
---|
[4d51835] | 1752 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
[1d4580a] | 1753 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); } |
---|
[4d51835] | 1754 | | initializer_list ',' designation initializer |
---|
[1d4580a] | 1755 | { $$ = (InitializerNode *)( $1->set_last( $4->set_designators( $3 ) ) ); } |
---|
[4d51835] | 1756 | ; |
---|
[b87a5ed] | 1757 | |
---|
[de62360d] | 1758 | // There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of |
---|
| 1759 | // '=' to separator the designator from the initializer value, as in: |
---|
[c11e31c] | 1760 | // |
---|
[b87a5ed] | 1761 | // int x[10] = { [1] = 3 }; |
---|
[c11e31c] | 1762 | // |
---|
[de62360d] | 1763 | // The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA |
---|
| 1764 | // changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for |
---|
| 1765 | // field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to |
---|
| 1766 | // shift/reduce conflicts |
---|
[51b7345] | 1767 | |
---|
| 1768 | designation: |
---|
[4d51835] | 1769 | designator_list ':' // C99, CFA uses ":" instead of "=" |
---|
[2871210] | 1770 | | no_attr_identifier_or_type_name ':' // GCC, field name |
---|
[d1625f8] | 1771 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
---|
[4d51835] | 1772 | ; |
---|
[51b7345] | 1773 | |
---|
[b87a5ed] | 1774 | designator_list: // C99 |
---|
[4d51835] | 1775 | designator |
---|
[2871210] | 1776 | | designator_list designator |
---|
[1d4580a] | 1777 | { $$ = (ExpressionNode *)( $1->set_last( $2 ) ); } |
---|
[d1625f8] | 1778 | //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); } |
---|
[4d51835] | 1779 | ; |
---|
[51b7345] | 1780 | |
---|
| 1781 | designator: |
---|
[d1625f8] | 1782 | '.' no_attr_identifier_or_type_name // C99, field name |
---|
| 1783 | { $$ = new ExpressionNode( build_varref( $2 ) ); } |
---|
[4d51835] | 1784 | | '[' push assignment_expression pop ']' // C99, single array element |
---|
[de62360d] | 1785 | // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple. |
---|
[d1625f8] | 1786 | { $$ = $3; } |
---|
[4d51835] | 1787 | | '[' push subrange pop ']' // CFA, multiple array elements |
---|
[d1625f8] | 1788 | { $$ = $3; } |
---|
[4d51835] | 1789 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements |
---|
[d1625f8] | 1790 | { $$ = new ExpressionNode( build_range( $3, $5 ) ); } |
---|
[4d51835] | 1791 | | '.' '[' push field_list pop ']' // CFA, tuple field selector |
---|
[d1625f8] | 1792 | { $$ = $4; } |
---|
[4d51835] | 1793 | ; |
---|
[51b7345] | 1794 | |
---|
[de62360d] | 1795 | // The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters, |
---|
| 1796 | // rather than an object-oriented type system. This required four groups of extensions: |
---|
[c11e31c] | 1797 | // |
---|
| 1798 | // Overloading: function, data, and operator identifiers may be overloaded. |
---|
| 1799 | // |
---|
[de62360d] | 1800 | // Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object |
---|
| 1801 | // and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide |
---|
| 1802 | // definitions of new types. Type declarations with storage class "extern" provide opaque types. |
---|
[c11e31c] | 1803 | // |
---|
[de62360d] | 1804 | // Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call |
---|
| 1805 | // site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
[c11e31c] | 1806 | // |
---|
| 1807 | // Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
[de62360d] | 1808 | // types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass |
---|
| 1809 | // hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or |
---|
| 1810 | // types provide the operations declared by a specification. Assertions are normally used to declare requirements |
---|
| 1811 | // on type arguments of polymorphic functions. |
---|
[c11e31c] | 1812 | |
---|
[b87a5ed] | 1813 | typegen_declaration_specifier: // CFA |
---|
[4d51835] | 1814 | typegen_type_specifier |
---|
| 1815 | | declaration_qualifier_list typegen_type_specifier |
---|
| 1816 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1817 | | typegen_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1818 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1819 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
| 1820 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1821 | ; |
---|
[b87a5ed] | 1822 | |
---|
| 1823 | typegen_type_specifier: // CFA |
---|
[2871210] | 1824 | typegen_name |
---|
| 1825 | | type_qualifier_list typegen_name |
---|
| 1826 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 1827 | | typegen_type_specifier type_qualifier |
---|
| 1828 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1829 | ; |
---|
[b87a5ed] | 1830 | |
---|
[2871210] | 1831 | typegen_name: // CFA |
---|
| 1832 | TYPEGENname '(' type_name_list ')' |
---|
| 1833 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
| 1834 | ; |
---|
| 1835 | |
---|
[b87a5ed] | 1836 | type_parameter_list: // CFA |
---|
[4d51835] | 1837 | type_parameter assignment_opt |
---|
| 1838 | | type_parameter_list ',' type_parameter assignment_opt |
---|
| 1839 | { $$ = $1->appendList( $3 ); } |
---|
| 1840 | ; |
---|
[b87a5ed] | 1841 | |
---|
| 1842 | type_parameter: // CFA |
---|
[2871210] | 1843 | type_class no_attr_identifier_or_type_name |
---|
| 1844 | { typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); } |
---|
[4d51835] | 1845 | assertion_list_opt |
---|
| 1846 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
| 1847 | | type_specifier identifier_parameter_declarator |
---|
| 1848 | ; |
---|
[b87a5ed] | 1849 | |
---|
| 1850 | type_class: // CFA |
---|
[4040425] | 1851 | OTYPE |
---|
[5b639ee] | 1852 | { $$ = DeclarationNode::Otype; } |
---|
[4d51835] | 1853 | | DTYPE |
---|
| 1854 | { $$ = DeclarationNode::Ftype; } |
---|
| 1855 | | FTYPE |
---|
| 1856 | { $$ = DeclarationNode::Dtype; } |
---|
| 1857 | ; |
---|
[b87a5ed] | 1858 | |
---|
| 1859 | assertion_list_opt: // CFA |
---|
[4d51835] | 1860 | // empty |
---|
| 1861 | { $$ = 0; } |
---|
| 1862 | | assertion_list_opt assertion |
---|
[4e06c1e] | 1863 | { $$ = $1 != 0 ? $1->appendList( $2 ) : $2; } |
---|
[4d51835] | 1864 | ; |
---|
[b87a5ed] | 1865 | |
---|
| 1866 | assertion: // CFA |
---|
[2871210] | 1867 | '|' no_attr_identifier_or_type_name '(' type_name_list ')' |
---|
[4d51835] | 1868 | { |
---|
[4040425] | 1869 | typedefTable.openTrait( *$2 ); |
---|
| 1870 | $$ = DeclarationNode::newTraitUse( $2, $4 ); |
---|
[4d51835] | 1871 | } |
---|
[4040425] | 1872 | | '|' '{' push trait_declaration_list '}' |
---|
[4d51835] | 1873 | { $$ = $4; } |
---|
[4040425] | 1874 | | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list '}' '(' type_name_list ')' |
---|
[4d51835] | 1875 | { $$ = 0; } |
---|
| 1876 | ; |
---|
[b87a5ed] | 1877 | |
---|
| 1878 | type_name_list: // CFA |
---|
[4d51835] | 1879 | type_name |
---|
[d1625f8] | 1880 | { $$ = new ExpressionNode( build_typevalue( $1 ) ); } |
---|
[4d51835] | 1881 | | assignment_expression |
---|
| 1882 | | type_name_list ',' type_name |
---|
[1d4580a] | 1883 | { $$ = (ExpressionNode *)( $1->set_last( new ExpressionNode( build_typevalue( $3 ) ) ) ); } |
---|
[4d51835] | 1884 | | type_name_list ',' assignment_expression |
---|
[1d4580a] | 1885 | { $$ = (ExpressionNode *)( $1->set_last( $3 )); } |
---|
[4d51835] | 1886 | ; |
---|
[b87a5ed] | 1887 | |
---|
| 1888 | type_declaring_list: // CFA |
---|
[4040425] | 1889 | OTYPE type_declarator |
---|
[4d51835] | 1890 | { $$ = $2; } |
---|
[4040425] | 1891 | | storage_class_list OTYPE type_declarator |
---|
[4d51835] | 1892 | { $$ = $3->addQualifiers( $1 ); } |
---|
| 1893 | | type_declaring_list ',' type_declarator |
---|
| 1894 | { $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); } |
---|
| 1895 | ; |
---|
[b87a5ed] | 1896 | |
---|
| 1897 | type_declarator: // CFA |
---|
[4d51835] | 1898 | type_declarator_name assertion_list_opt |
---|
| 1899 | { $$ = $1->addAssertions( $2 ); } |
---|
| 1900 | | type_declarator_name assertion_list_opt '=' type_name |
---|
| 1901 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
| 1902 | ; |
---|
[b87a5ed] | 1903 | |
---|
| 1904 | type_declarator_name: // CFA |
---|
[2871210] | 1905 | no_attr_identifier_or_type_name |
---|
[4d51835] | 1906 | { |
---|
[de62360d] | 1907 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TD ); |
---|
[4d51835] | 1908 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
| 1909 | } |
---|
[2871210] | 1910 | | no_01_identifier_or_type_name '(' push type_parameter_list pop ')' |
---|
[4d51835] | 1911 | { |
---|
[de62360d] | 1912 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TG ); |
---|
[4d51835] | 1913 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
| 1914 | } |
---|
| 1915 | ; |
---|
[b87a5ed] | 1916 | |
---|
[4040425] | 1917 | trait_specifier: // CFA |
---|
| 1918 | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}' |
---|
[4d51835] | 1919 | { |
---|
[de62360d] | 1920 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 1921 | $$ = DeclarationNode::newTrait( $2, $5, 0 ); |
---|
[4d51835] | 1922 | } |
---|
[4040425] | 1923 | | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' |
---|
[4d51835] | 1924 | { |
---|
[4040425] | 1925 | typedefTable.enterTrait( *$2 ); |
---|
[4d51835] | 1926 | typedefTable.enterScope(); |
---|
| 1927 | } |
---|
[4040425] | 1928 | trait_declaration_list '}' |
---|
[4d51835] | 1929 | { |
---|
[4040425] | 1930 | typedefTable.leaveTrait(); |
---|
[de62360d] | 1931 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 1932 | $$ = DeclarationNode::newTrait( $2, $5, $10 ); |
---|
[4d51835] | 1933 | } |
---|
| 1934 | ; |
---|
[b87a5ed] | 1935 | |
---|
[4040425] | 1936 | trait_declaration_list: // CFA |
---|
| 1937 | trait_declaration |
---|
| 1938 | | trait_declaration_list push trait_declaration |
---|
[4d51835] | 1939 | { $$ = $1->appendList( $3 ); } |
---|
| 1940 | ; |
---|
[b87a5ed] | 1941 | |
---|
[4040425] | 1942 | trait_declaration: // CFA |
---|
| 1943 | new_trait_declaring_list pop ';' |
---|
| 1944 | | trait_declaring_list pop ';' |
---|
[4d51835] | 1945 | ; |
---|
[b87a5ed] | 1946 | |
---|
[4040425] | 1947 | new_trait_declaring_list: // CFA |
---|
[4d51835] | 1948 | new_variable_specifier |
---|
| 1949 | { |
---|
| 1950 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1951 | $$ = $1; |
---|
| 1952 | } |
---|
| 1953 | | new_function_specifier |
---|
| 1954 | { |
---|
| 1955 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1956 | $$ = $1; |
---|
| 1957 | } |
---|
[4040425] | 1958 | | new_trait_declaring_list pop ',' push identifier_or_type_name |
---|
[4d51835] | 1959 | { |
---|
[de62360d] | 1960 | typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID ); |
---|
[4d51835] | 1961 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1962 | } |
---|
| 1963 | ; |
---|
[b87a5ed] | 1964 | |
---|
[4040425] | 1965 | trait_declaring_list: // CFA |
---|
[4d51835] | 1966 | type_specifier declarator |
---|
| 1967 | { |
---|
| 1968 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1969 | $$ = $2->addType( $1 ); |
---|
| 1970 | } |
---|
[4040425] | 1971 | | trait_declaring_list pop ',' push declarator |
---|
[4d51835] | 1972 | { |
---|
| 1973 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1974 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
| 1975 | } |
---|
| 1976 | ; |
---|
[51b7345] | 1977 | |
---|
[c11e31c] | 1978 | //***************************** EXTERNAL DEFINITIONS ***************************** |
---|
[51b7345] | 1979 | |
---|
| 1980 | translation_unit: |
---|
[4d51835] | 1981 | // empty |
---|
| 1982 | {} // empty input file |
---|
| 1983 | | external_definition_list |
---|
[926af74] | 1984 | { parseTree = parseTree != nullptr ? parseTree->appendList( $1 ) : $1; } |
---|
[4d51835] | 1985 | ; |
---|
[51b7345] | 1986 | |
---|
| 1987 | external_definition_list: |
---|
[4d51835] | 1988 | external_definition |
---|
| 1989 | | external_definition_list push external_definition |
---|
[926af74] | 1990 | { $$ = $1 != nullptr ? $1->appendList( $3 ) : $3; } |
---|
[4d51835] | 1991 | ; |
---|
[51b7345] | 1992 | |
---|
| 1993 | external_definition_list_opt: |
---|
[4d51835] | 1994 | // empty |
---|
| 1995 | { $$ = 0; } |
---|
| 1996 | | external_definition_list |
---|
| 1997 | ; |
---|
[51b7345] | 1998 | |
---|
| 1999 | external_definition: |
---|
[4d51835] | 2000 | declaration |
---|
| 2001 | | external_function_definition |
---|
| 2002 | | asm_statement // GCC, global assembler statement |
---|
| 2003 | {} |
---|
| 2004 | | EXTERN STRINGliteral |
---|
| 2005 | { |
---|
[3b8e52c] | 2006 | linkageStack.push( linkage ); // handle nested extern "C"/"Cforall" |
---|
[ab57786] | 2007 | linkage = LinkageSpec::fromString( *$2 ); |
---|
[4d51835] | 2008 | } |
---|
| 2009 | '{' external_definition_list_opt '}' // C++-style linkage specifier |
---|
| 2010 | { |
---|
| 2011 | linkage = linkageStack.top(); |
---|
| 2012 | linkageStack.pop(); |
---|
| 2013 | $$ = $5; |
---|
| 2014 | } |
---|
| 2015 | | EXTENSION external_definition |
---|
[8e9cbb2] | 2016 | { // mark all fields in list |
---|
[926af74] | 2017 | for ( DeclarationNode *iter = $2; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) |
---|
[8e9cbb2] | 2018 | iter->set_extension( true ); |
---|
| 2019 | $$ = $2; |
---|
| 2020 | } |
---|
[4d51835] | 2021 | ; |
---|
| 2022 | |
---|
| 2023 | external_function_definition: |
---|
| 2024 | function_definition |
---|
[de62360d] | 2025 | // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of |
---|
[c6b1105] | 2026 | // legacy code with global functions missing the type-specifier for the return type, and assuming "int". |
---|
| 2027 | // Parsing is possible because function_definition does not appear in the context of an expression (nested |
---|
| 2028 | // functions preclude this concession, i.e., all nested function must have a return type). A function prototype |
---|
| 2029 | // declaration must still have a type_specifier. OBSOLESCENT (see 1) |
---|
[4d51835] | 2030 | | function_declarator compound_statement |
---|
| 2031 | { |
---|
| 2032 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2033 | typedefTable.leaveScope(); |
---|
| 2034 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2035 | } |
---|
| 2036 | | old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2037 | { |
---|
| 2038 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2039 | typedefTable.leaveScope(); |
---|
| 2040 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
| 2041 | } |
---|
| 2042 | ; |
---|
[51b7345] | 2043 | |
---|
| 2044 | function_definition: |
---|
[4d51835] | 2045 | new_function_declaration compound_statement // CFA |
---|
| 2046 | { |
---|
| 2047 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2048 | typedefTable.leaveScope(); |
---|
| 2049 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2050 | } |
---|
| 2051 | | declaration_specifier function_declarator compound_statement |
---|
| 2052 | { |
---|
| 2053 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2054 | typedefTable.leaveScope(); |
---|
| 2055 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
| 2056 | } |
---|
| 2057 | | type_qualifier_list function_declarator compound_statement |
---|
| 2058 | { |
---|
| 2059 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2060 | typedefTable.leaveScope(); |
---|
| 2061 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2062 | } |
---|
| 2063 | | declaration_qualifier_list function_declarator compound_statement |
---|
| 2064 | { |
---|
| 2065 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2066 | typedefTable.leaveScope(); |
---|
| 2067 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2068 | } |
---|
| 2069 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
| 2070 | { |
---|
| 2071 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2072 | typedefTable.leaveScope(); |
---|
| 2073 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2074 | } |
---|
| 2075 | |
---|
| 2076 | // Old-style K&R function definition, OBSOLESCENT (see 4) |
---|
| 2077 | | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2078 | { |
---|
| 2079 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2080 | typedefTable.leaveScope(); |
---|
| 2081 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
| 2082 | } |
---|
| 2083 | | type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2084 | { |
---|
| 2085 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2086 | typedefTable.leaveScope(); |
---|
| 2087 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2088 | } |
---|
| 2089 | |
---|
| 2090 | // Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) |
---|
| 2091 | | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2092 | { |
---|
| 2093 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2094 | typedefTable.leaveScope(); |
---|
| 2095 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2096 | } |
---|
| 2097 | | declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2098 | { |
---|
| 2099 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2100 | typedefTable.leaveScope(); |
---|
| 2101 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2102 | } |
---|
| 2103 | ; |
---|
[51b7345] | 2104 | |
---|
| 2105 | declarator: |
---|
[4d51835] | 2106 | variable_declarator |
---|
[c6b1105] | 2107 | | variable_type_redeclarator |
---|
[4d51835] | 2108 | | function_declarator |
---|
| 2109 | ; |
---|
[51b7345] | 2110 | |
---|
| 2111 | subrange: |
---|
[4d51835] | 2112 | constant_expression '~' constant_expression // CFA, integer subrange |
---|
[d1625f8] | 2113 | { $$ = new ExpressionNode( build_range( $1, $3 ) ); } |
---|
[4d51835] | 2114 | ; |
---|
[b87a5ed] | 2115 | |
---|
| 2116 | asm_name_opt: // GCC |
---|
[4d51835] | 2117 | // empty |
---|
[c1c1112] | 2118 | | ASM '(' string_literal_list ')' attribute_list_opt { delete $3; } // FIX ME: unimplemented |
---|
[4d51835] | 2119 | ; |
---|
[b87a5ed] | 2120 | |
---|
| 2121 | attribute_list_opt: // GCC |
---|
[4d51835] | 2122 | // empty |
---|
[1db21619] | 2123 | { $$ = 0; } |
---|
[4d51835] | 2124 | | attribute_list |
---|
| 2125 | ; |
---|
[b87a5ed] | 2126 | |
---|
| 2127 | attribute_list: // GCC |
---|
[4d51835] | 2128 | attribute |
---|
| 2129 | | attribute_list attribute |
---|
[1db21619] | 2130 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 2131 | ; |
---|
[b87a5ed] | 2132 | |
---|
| 2133 | attribute: // GCC |
---|
[4d51835] | 2134 | ATTRIBUTE '(' '(' attribute_parameter_list ')' ')' |
---|
[1db21619] | 2135 | // { $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
| 2136 | { $$ = 0; } |
---|
[4d51835] | 2137 | ; |
---|
[b87a5ed] | 2138 | |
---|
| 2139 | attribute_parameter_list: // GCC |
---|
[4d51835] | 2140 | attrib |
---|
| 2141 | | attribute_parameter_list ',' attrib |
---|
| 2142 | ; |
---|
[b87a5ed] | 2143 | |
---|
| 2144 | attrib: // GCC |
---|
[4d51835] | 2145 | // empty |
---|
| 2146 | | any_word |
---|
[c1c1112] | 2147 | | any_word '(' comma_expression_opt ')' { delete $3; } // FIX ME: unimplemented |
---|
[4d51835] | 2148 | ; |
---|
[b87a5ed] | 2149 | |
---|
| 2150 | any_word: // GCC |
---|
[c1c1112] | 2151 | identifier_or_type_name { delete $1; } // FIX ME: unimplemented |
---|
| 2152 | | storage_class { delete $1; } // FIX ME: unimplemented |
---|
| 2153 | | basic_type_name { delete $1; } // FIX ME: unimplemented |
---|
| 2154 | | type_qualifier { delete $1; } // FIX ME: unimplemented |
---|
[4d51835] | 2155 | ; |
---|
[51b7345] | 2156 | |
---|
[c11e31c] | 2157 | // ============================================================================ |
---|
[de62360d] | 2158 | // The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary |
---|
| 2159 | // because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as |
---|
| 2160 | // in: |
---|
[c11e31c] | 2161 | // |
---|
[b87a5ed] | 2162 | // int (*f())[10] { ... }; |
---|
| 2163 | // ... (*f())[3] += 1; // definition mimics usage |
---|
[c11e31c] | 2164 | // |
---|
[de62360d] | 2165 | // Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of |
---|
| 2166 | // the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context. |
---|
[c11e31c] | 2167 | // ============================================================================ |
---|
| 2168 | |
---|
| 2169 | // ---------------------------------------------------------------------------- |
---|
[de62360d] | 2170 | // The set of valid declarators before a compound statement for defining a function is less than the set of declarators |
---|
| 2171 | // to define a variable or function prototype, e.g.: |
---|
[c11e31c] | 2172 | // |
---|
[b87a5ed] | 2173 | // valid declaration invalid definition |
---|
| 2174 | // ----------------- ------------------ |
---|
[4d51835] | 2175 | // int f; int f {} |
---|
| 2176 | // int *f; int *f {} |
---|
[b87a5ed] | 2177 | // int f[10]; int f[10] {} |
---|
[4d51835] | 2178 | // int (*f)(int); int (*f)(int) {} |
---|
[c11e31c] | 2179 | // |
---|
[de62360d] | 2180 | // To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence |
---|
| 2181 | // variable_declarator and function_declarator. |
---|
[c11e31c] | 2182 | // ---------------------------------------------------------------------------- |
---|
| 2183 | |
---|
[de62360d] | 2184 | // This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes |
---|
| 2185 | // declaring an array of functions versus a pointer to an array of functions. |
---|
[51b7345] | 2186 | |
---|
| 2187 | variable_declarator: |
---|
[4d51835] | 2188 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2189 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2190 | | variable_ptr |
---|
| 2191 | | variable_array attribute_list_opt |
---|
[1db21619] | 2192 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2193 | | variable_function attribute_list_opt |
---|
[1db21619] | 2194 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2195 | ; |
---|
[51b7345] | 2196 | |
---|
| 2197 | paren_identifier: |
---|
[4d51835] | 2198 | identifier |
---|
| 2199 | { |
---|
[de62360d] | 2200 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2201 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2202 | } |
---|
| 2203 | | '(' paren_identifier ')' // redundant parenthesis |
---|
| 2204 | { $$ = $2; } |
---|
| 2205 | ; |
---|
[51b7345] | 2206 | |
---|
| 2207 | variable_ptr: |
---|
[dd51906] | 2208 | ptrref_operator variable_declarator |
---|
[4d51835] | 2209 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2210 | | ptrref_operator type_qualifier_list variable_declarator |
---|
[4d51835] | 2211 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2212 | | '(' variable_ptr ')' |
---|
| 2213 | { $$ = $2; } |
---|
| 2214 | ; |
---|
[51b7345] | 2215 | |
---|
| 2216 | variable_array: |
---|
[4d51835] | 2217 | paren_identifier array_dimension |
---|
| 2218 | { $$ = $1->addArray( $2 ); } |
---|
| 2219 | | '(' variable_ptr ')' array_dimension |
---|
| 2220 | { $$ = $2->addArray( $4 ); } |
---|
| 2221 | | '(' variable_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2222 | { $$ = $2->addArray( $4 ); } |
---|
| 2223 | | '(' variable_array ')' // redundant parenthesis |
---|
| 2224 | { $$ = $2; } |
---|
| 2225 | ; |
---|
[51b7345] | 2226 | |
---|
| 2227 | variable_function: |
---|
[4d51835] | 2228 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2229 | { $$ = $2->addParamList( $6 ); } |
---|
| 2230 | | '(' variable_function ')' // redundant parenthesis |
---|
| 2231 | { $$ = $2; } |
---|
| 2232 | ; |
---|
[51b7345] | 2233 | |
---|
[c6b1105] | 2234 | // This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is |
---|
| 2235 | // no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist |
---|
| 2236 | // is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2237 | |
---|
| 2238 | function_declarator: |
---|
[4d51835] | 2239 | function_no_ptr attribute_list_opt |
---|
[1db21619] | 2240 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2241 | | function_ptr |
---|
| 2242 | | function_array attribute_list_opt |
---|
[1db21619] | 2243 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2244 | ; |
---|
[51b7345] | 2245 | |
---|
| 2246 | function_no_ptr: |
---|
[4d51835] | 2247 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2248 | { $$ = $1->addParamList( $4 ); } |
---|
| 2249 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2250 | { $$ = $2->addParamList( $6 ); } |
---|
| 2251 | | '(' function_no_ptr ')' // redundant parenthesis |
---|
| 2252 | { $$ = $2; } |
---|
| 2253 | ; |
---|
[51b7345] | 2254 | |
---|
| 2255 | function_ptr: |
---|
[dd51906] | 2256 | ptrref_operator function_declarator |
---|
[4d51835] | 2257 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2258 | | ptrref_operator type_qualifier_list function_declarator |
---|
[4d51835] | 2259 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2260 | | '(' function_ptr ')' |
---|
| 2261 | { $$ = $2; } |
---|
| 2262 | ; |
---|
[51b7345] | 2263 | |
---|
| 2264 | function_array: |
---|
[4d51835] | 2265 | '(' function_ptr ')' array_dimension |
---|
| 2266 | { $$ = $2->addArray( $4 ); } |
---|
| 2267 | | '(' function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2268 | { $$ = $2->addArray( $4 ); } |
---|
| 2269 | | '(' function_array ')' // redundant parenthesis |
---|
| 2270 | { $$ = $2; } |
---|
| 2271 | ; |
---|
[51b7345] | 2272 | |
---|
[de62360d] | 2273 | // This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a typedef name |
---|
| 2274 | // (see function_declarator for additional comments). The pattern precludes returning arrays and functions versus |
---|
| 2275 | // pointers to arrays and functions. |
---|
[51b7345] | 2276 | |
---|
| 2277 | old_function_declarator: |
---|
[4d51835] | 2278 | old_function_no_ptr |
---|
| 2279 | | old_function_ptr |
---|
| 2280 | | old_function_array |
---|
| 2281 | ; |
---|
[51b7345] | 2282 | |
---|
| 2283 | old_function_no_ptr: |
---|
[4d51835] | 2284 | paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter |
---|
| 2285 | { $$ = $1->addIdList( $3 ); } |
---|
| 2286 | | '(' old_function_ptr ')' '(' identifier_list ')' |
---|
| 2287 | { $$ = $2->addIdList( $5 ); } |
---|
| 2288 | | '(' old_function_no_ptr ')' // redundant parenthesis |
---|
| 2289 | { $$ = $2; } |
---|
| 2290 | ; |
---|
[51b7345] | 2291 | |
---|
| 2292 | old_function_ptr: |
---|
[dd51906] | 2293 | ptrref_operator old_function_declarator |
---|
[4d51835] | 2294 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2295 | | ptrref_operator type_qualifier_list old_function_declarator |
---|
[4d51835] | 2296 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2297 | | '(' old_function_ptr ')' |
---|
| 2298 | { $$ = $2; } |
---|
| 2299 | ; |
---|
[51b7345] | 2300 | |
---|
| 2301 | old_function_array: |
---|
[4d51835] | 2302 | '(' old_function_ptr ')' array_dimension |
---|
| 2303 | { $$ = $2->addArray( $4 ); } |
---|
| 2304 | | '(' old_function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2305 | { $$ = $2->addArray( $4 ); } |
---|
| 2306 | | '(' old_function_array ')' // redundant parenthesis |
---|
| 2307 | { $$ = $2; } |
---|
| 2308 | ; |
---|
[51b7345] | 2309 | |
---|
[2871210] | 2310 | // This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.: |
---|
[c11e31c] | 2311 | // |
---|
[b87a5ed] | 2312 | // typedef int foo; |
---|
| 2313 | // { |
---|
| 2314 | // int foo; // redefine typedef name in new scope |
---|
| 2315 | // } |
---|
[c11e31c] | 2316 | // |
---|
[de62360d] | 2317 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2318 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2319 | |
---|
[c6b1105] | 2320 | variable_type_redeclarator: |
---|
[2871210] | 2321 | paren_type attribute_list_opt |
---|
[1db21619] | 2322 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2323 | | type_ptr |
---|
| 2324 | | type_array attribute_list_opt |
---|
[1db21619] | 2325 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2326 | | type_function attribute_list_opt |
---|
[1db21619] | 2327 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2328 | ; |
---|
[51b7345] | 2329 | |
---|
[2871210] | 2330 | paren_type: |
---|
| 2331 | typedef |
---|
| 2332 | | '(' paren_type ')' |
---|
[4d51835] | 2333 | { $$ = $2; } |
---|
| 2334 | ; |
---|
[51b7345] | 2335 | |
---|
[2871210] | 2336 | type_ptr: |
---|
[c6b1105] | 2337 | ptrref_operator variable_type_redeclarator |
---|
[4d51835] | 2338 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c6b1105] | 2339 | | ptrref_operator type_qualifier_list variable_type_redeclarator |
---|
[4d51835] | 2340 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2341 | | '(' type_ptr ')' |
---|
[4d51835] | 2342 | { $$ = $2; } |
---|
| 2343 | ; |
---|
[51b7345] | 2344 | |
---|
[2871210] | 2345 | type_array: |
---|
| 2346 | paren_type array_dimension |
---|
[4d51835] | 2347 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2348 | | '(' type_ptr ')' array_dimension |
---|
[4d51835] | 2349 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2350 | | '(' type_array ')' multi_array_dimension // redundant parenthesis |
---|
[4d51835] | 2351 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2352 | | '(' type_array ')' // redundant parenthesis |
---|
[4d51835] | 2353 | { $$ = $2; } |
---|
| 2354 | ; |
---|
[51b7345] | 2355 | |
---|
[2871210] | 2356 | type_function: |
---|
| 2357 | paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2358 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2359 | | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2360 | { $$ = $2->addParamList( $6 ); } |
---|
[2871210] | 2361 | | '(' type_function ')' // redundant parenthesis |
---|
[4d51835] | 2362 | { $$ = $2; } |
---|
| 2363 | ; |
---|
[51b7345] | 2364 | |
---|
[de62360d] | 2365 | // This pattern parses a declaration for a parameter variable or function prototype that is not redefining a typedef |
---|
| 2366 | // name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes declaring an |
---|
| 2367 | // array of functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to |
---|
| 2368 | // arrays and functions. |
---|
[51b7345] | 2369 | |
---|
| 2370 | identifier_parameter_declarator: |
---|
[4d51835] | 2371 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2372 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2373 | | identifier_parameter_ptr |
---|
| 2374 | | identifier_parameter_array attribute_list_opt |
---|
[1db21619] | 2375 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2376 | | identifier_parameter_function attribute_list_opt |
---|
[1db21619] | 2377 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2378 | ; |
---|
[51b7345] | 2379 | |
---|
| 2380 | identifier_parameter_ptr: |
---|
[dd51906] | 2381 | ptrref_operator identifier_parameter_declarator |
---|
[4d51835] | 2382 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2383 | | ptrref_operator type_qualifier_list identifier_parameter_declarator |
---|
[4d51835] | 2384 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2385 | | '(' identifier_parameter_ptr ')' |
---|
| 2386 | { $$ = $2; } |
---|
| 2387 | ; |
---|
[51b7345] | 2388 | |
---|
| 2389 | identifier_parameter_array: |
---|
[4d51835] | 2390 | paren_identifier array_parameter_dimension |
---|
| 2391 | { $$ = $1->addArray( $2 ); } |
---|
| 2392 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
| 2393 | { $$ = $2->addArray( $4 ); } |
---|
| 2394 | | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2395 | { $$ = $2->addArray( $4 ); } |
---|
| 2396 | | '(' identifier_parameter_array ')' // redundant parenthesis |
---|
| 2397 | { $$ = $2; } |
---|
| 2398 | ; |
---|
[51b7345] | 2399 | |
---|
| 2400 | identifier_parameter_function: |
---|
[4d51835] | 2401 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2402 | { $$ = $1->addParamList( $4 ); } |
---|
| 2403 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2404 | { $$ = $2->addParamList( $6 ); } |
---|
| 2405 | | '(' identifier_parameter_function ')' // redundant parenthesis |
---|
| 2406 | { $$ = $2; } |
---|
| 2407 | ; |
---|
[b87a5ed] | 2408 | |
---|
[de62360d] | 2409 | // This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name, |
---|
| 2410 | // e.g.: |
---|
[c11e31c] | 2411 | // |
---|
[b87a5ed] | 2412 | // typedef int foo; |
---|
| 2413 | // int f( int foo ); // redefine typedef name in new scope |
---|
[c11e31c] | 2414 | // |
---|
[de62360d] | 2415 | // and allows the C99 array options, which can only appear in a parameter list. In addition, the pattern handles the |
---|
| 2416 | // special meaning of parenthesis around a typedef name: |
---|
[c11e31c] | 2417 | // |
---|
[b87a5ed] | 2418 | // ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
| 2419 | // parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
| 2420 | // not as redundant parentheses around the identifier." |
---|
[c11e31c] | 2421 | // |
---|
[c6b1105] | 2422 | // For example: |
---|
[c11e31c] | 2423 | // |
---|
[b87a5ed] | 2424 | // typedef float T; |
---|
[4d51835] | 2425 | // int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
[b87a5ed] | 2426 | // int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
| 2427 | // int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
| 2428 | // int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
[c11e31c] | 2429 | // |
---|
[de62360d] | 2430 | // In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and |
---|
| 2431 | // not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of |
---|
| 2432 | // functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and |
---|
| 2433 | // functions. |
---|
[51b7345] | 2434 | |
---|
[2871210] | 2435 | type_parameter_redeclarator: |
---|
[4d51835] | 2436 | typedef attribute_list_opt |
---|
[1db21619] | 2437 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2438 | | type_parameter_ptr |
---|
| 2439 | | type_parameter_array attribute_list_opt |
---|
[1db21619] | 2440 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2441 | | type_parameter_function attribute_list_opt |
---|
[1db21619] | 2442 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2443 | ; |
---|
[51b7345] | 2444 | |
---|
| 2445 | typedef: |
---|
[4d51835] | 2446 | TYPEDEFname |
---|
| 2447 | { |
---|
[de62360d] | 2448 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2449 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2450 | } |
---|
[2871210] | 2451 | | TYPEGENname |
---|
| 2452 | { |
---|
| 2453 | typedefTable.setNextIdentifier( *$1 ); |
---|
| 2454 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2455 | } |
---|
[4d51835] | 2456 | ; |
---|
[51b7345] | 2457 | |
---|
[2871210] | 2458 | type_parameter_ptr: |
---|
[dd51906] | 2459 | ptrref_operator type_parameter_redeclarator |
---|
[4d51835] | 2460 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2461 | | ptrref_operator type_qualifier_list type_parameter_redeclarator |
---|
[4d51835] | 2462 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2463 | | '(' type_parameter_ptr ')' |
---|
[4d51835] | 2464 | { $$ = $2; } |
---|
| 2465 | ; |
---|
[51b7345] | 2466 | |
---|
[2871210] | 2467 | type_parameter_array: |
---|
[4d51835] | 2468 | typedef array_parameter_dimension |
---|
| 2469 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2470 | | '(' type_parameter_ptr ')' array_parameter_dimension |
---|
[4d51835] | 2471 | { $$ = $2->addArray( $4 ); } |
---|
| 2472 | ; |
---|
[51b7345] | 2473 | |
---|
[2871210] | 2474 | type_parameter_function: |
---|
[4d51835] | 2475 | typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2476 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2477 | | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2478 | { $$ = $2->addParamList( $6 ); } |
---|
| 2479 | ; |
---|
[b87a5ed] | 2480 | |
---|
[de62360d] | 2481 | // This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to |
---|
| 2482 | // which the type applies, e.g.: |
---|
[c11e31c] | 2483 | // |
---|
[b87a5ed] | 2484 | // sizeof( int ); |
---|
| 2485 | // sizeof( int [10] ); |
---|
[c11e31c] | 2486 | // |
---|
[de62360d] | 2487 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2488 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2489 | |
---|
| 2490 | abstract_declarator: |
---|
[4d51835] | 2491 | abstract_ptr |
---|
| 2492 | | abstract_array attribute_list_opt |
---|
[1db21619] | 2493 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2494 | | abstract_function attribute_list_opt |
---|
[1db21619] | 2495 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2496 | ; |
---|
[51b7345] | 2497 | |
---|
| 2498 | abstract_ptr: |
---|
[dd51906] | 2499 | ptrref_operator |
---|
[4d51835] | 2500 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2501 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2502 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2503 | | ptrref_operator abstract_declarator |
---|
[4d51835] | 2504 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2505 | | ptrref_operator type_qualifier_list abstract_declarator |
---|
[4d51835] | 2506 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2507 | | '(' abstract_ptr ')' |
---|
| 2508 | { $$ = $2; } |
---|
| 2509 | ; |
---|
[51b7345] | 2510 | |
---|
| 2511 | abstract_array: |
---|
[4d51835] | 2512 | array_dimension |
---|
| 2513 | | '(' abstract_ptr ')' array_dimension |
---|
| 2514 | { $$ = $2->addArray( $4 ); } |
---|
| 2515 | | '(' abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2516 | { $$ = $2->addArray( $4 ); } |
---|
| 2517 | | '(' abstract_array ')' // redundant parenthesis |
---|
| 2518 | { $$ = $2; } |
---|
| 2519 | ; |
---|
[51b7345] | 2520 | |
---|
| 2521 | abstract_function: |
---|
[4d51835] | 2522 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[2298f728] | 2523 | { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); } |
---|
[4d51835] | 2524 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2525 | { $$ = $2->addParamList( $6 ); } |
---|
| 2526 | | '(' abstract_function ')' // redundant parenthesis |
---|
| 2527 | { $$ = $2; } |
---|
| 2528 | ; |
---|
[51b7345] | 2529 | |
---|
| 2530 | array_dimension: |
---|
[4d51835] | 2531 | // Only the first dimension can be empty. |
---|
[2871210] | 2532 | '[' ']' |
---|
[4d51835] | 2533 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
[2871210] | 2534 | | '[' ']' multi_array_dimension |
---|
| 2535 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); } |
---|
[4d51835] | 2536 | | multi_array_dimension |
---|
| 2537 | ; |
---|
[51b7345] | 2538 | |
---|
| 2539 | multi_array_dimension: |
---|
[4d51835] | 2540 | '[' push assignment_expression pop ']' |
---|
| 2541 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
| 2542 | | '[' push '*' pop ']' // C99 |
---|
| 2543 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
| 2544 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
| 2545 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
| 2546 | | multi_array_dimension '[' push '*' pop ']' // C99 |
---|
| 2547 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
| 2548 | ; |
---|
[51b7345] | 2549 | |
---|
[c11e31c] | 2550 | // This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
| 2551 | // identifier to which the type applies, e.g.: |
---|
| 2552 | // |
---|
[b87a5ed] | 2553 | // int f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2554 | // int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2555 | // |
---|
[de62360d] | 2556 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2557 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2558 | |
---|
| 2559 | abstract_parameter_declarator: |
---|
[4d51835] | 2560 | abstract_parameter_ptr |
---|
| 2561 | | abstract_parameter_array attribute_list_opt |
---|
[1db21619] | 2562 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2563 | | abstract_parameter_function attribute_list_opt |
---|
[1db21619] | 2564 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2565 | ; |
---|
[51b7345] | 2566 | |
---|
| 2567 | abstract_parameter_ptr: |
---|
[dd51906] | 2568 | ptrref_operator |
---|
[4d51835] | 2569 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2570 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2571 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2572 | | ptrref_operator abstract_parameter_declarator |
---|
[4d51835] | 2573 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2574 | | ptrref_operator type_qualifier_list abstract_parameter_declarator |
---|
[4d51835] | 2575 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2576 | | '(' abstract_parameter_ptr ')' |
---|
| 2577 | { $$ = $2; } |
---|
| 2578 | ; |
---|
[51b7345] | 2579 | |
---|
| 2580 | abstract_parameter_array: |
---|
[4d51835] | 2581 | array_parameter_dimension |
---|
| 2582 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
| 2583 | { $$ = $2->addArray( $4 ); } |
---|
| 2584 | | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2585 | { $$ = $2->addArray( $4 ); } |
---|
| 2586 | | '(' abstract_parameter_array ')' // redundant parenthesis |
---|
| 2587 | { $$ = $2; } |
---|
| 2588 | ; |
---|
[51b7345] | 2589 | |
---|
| 2590 | abstract_parameter_function: |
---|
[4d51835] | 2591 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[2298f728] | 2592 | { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); } |
---|
[4d51835] | 2593 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2594 | { $$ = $2->addParamList( $6 ); } |
---|
| 2595 | | '(' abstract_parameter_function ')' // redundant parenthesis |
---|
| 2596 | { $$ = $2; } |
---|
| 2597 | ; |
---|
[51b7345] | 2598 | |
---|
| 2599 | array_parameter_dimension: |
---|
[4d51835] | 2600 | // Only the first dimension can be empty or have qualifiers. |
---|
| 2601 | array_parameter_1st_dimension |
---|
| 2602 | | array_parameter_1st_dimension multi_array_dimension |
---|
| 2603 | { $$ = $1->addArray( $2 ); } |
---|
| 2604 | | multi_array_dimension |
---|
| 2605 | ; |
---|
[51b7345] | 2606 | |
---|
[c11e31c] | 2607 | // The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
| 2608 | // |
---|
[de62360d] | 2609 | // ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in |
---|
| 2610 | // a declaration of a function parameter with an array type, and then only in the outermost array type derivation." |
---|
[51b7345] | 2611 | |
---|
| 2612 | array_parameter_1st_dimension: |
---|
[2871210] | 2613 | '[' ']' |
---|
[4d51835] | 2614 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
| 2615 | // multi_array_dimension handles the '[' '*' ']' case |
---|
| 2616 | | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2617 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2618 | | '[' push type_qualifier_list pop ']' |
---|
| 2619 | { $$ = DeclarationNode::newArray( 0, $3, false ); } |
---|
| 2620 | // multi_array_dimension handles the '[' assignment_expression ']' case |
---|
| 2621 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2622 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2623 | | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']' |
---|
| 2624 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
| 2625 | | '[' push type_qualifier_list STATIC assignment_expression pop ']' |
---|
| 2626 | { $$ = DeclarationNode::newArray( $5, $3, true ); } |
---|
| 2627 | ; |
---|
[b87a5ed] | 2628 | |
---|
[de62360d] | 2629 | // This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type applies, |
---|
| 2630 | // e.g.: |
---|
[c11e31c] | 2631 | // |
---|
[b87a5ed] | 2632 | // sizeof( int ); // abstract variable; no identifier name specified |
---|
[c11e31c] | 2633 | // |
---|
[de62360d] | 2634 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2635 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2636 | |
---|
| 2637 | variable_abstract_declarator: |
---|
[4d51835] | 2638 | variable_abstract_ptr |
---|
| 2639 | | variable_abstract_array attribute_list_opt |
---|
[1db21619] | 2640 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2641 | | variable_abstract_function attribute_list_opt |
---|
[1db21619] | 2642 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2643 | ; |
---|
[51b7345] | 2644 | |
---|
| 2645 | variable_abstract_ptr: |
---|
[dd51906] | 2646 | ptrref_operator |
---|
[4d51835] | 2647 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2648 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2649 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2650 | | ptrref_operator variable_abstract_declarator |
---|
[4d51835] | 2651 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2652 | | ptrref_operator type_qualifier_list variable_abstract_declarator |
---|
[4d51835] | 2653 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2654 | | '(' variable_abstract_ptr ')' |
---|
| 2655 | { $$ = $2; } |
---|
| 2656 | ; |
---|
[51b7345] | 2657 | |
---|
| 2658 | variable_abstract_array: |
---|
[4d51835] | 2659 | array_dimension |
---|
| 2660 | | '(' variable_abstract_ptr ')' array_dimension |
---|
| 2661 | { $$ = $2->addArray( $4 ); } |
---|
| 2662 | | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2663 | { $$ = $2->addArray( $4 ); } |
---|
| 2664 | | '(' variable_abstract_array ')' // redundant parenthesis |
---|
| 2665 | { $$ = $2; } |
---|
| 2666 | ; |
---|
[51b7345] | 2667 | |
---|
| 2668 | variable_abstract_function: |
---|
[4d51835] | 2669 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2670 | { $$ = $2->addParamList( $6 ); } |
---|
| 2671 | | '(' variable_abstract_function ')' // redundant parenthesis |
---|
| 2672 | { $$ = $2; } |
---|
| 2673 | ; |
---|
[b87a5ed] | 2674 | |
---|
[de62360d] | 2675 | // This pattern parses a new-style declaration for a parameter variable or function prototype that is either an |
---|
| 2676 | // identifier or typedef name and allows the C99 array options, which can only appear in a parameter list. |
---|
[b87a5ed] | 2677 | |
---|
| 2678 | new_identifier_parameter_declarator_tuple: // CFA |
---|
[4d51835] | 2679 | new_identifier_parameter_declarator_no_tuple |
---|
| 2680 | | new_abstract_tuple |
---|
| 2681 | | type_qualifier_list new_abstract_tuple |
---|
| 2682 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2683 | ; |
---|
[b87a5ed] | 2684 | |
---|
| 2685 | new_identifier_parameter_declarator_no_tuple: // CFA |
---|
[4d51835] | 2686 | new_identifier_parameter_ptr |
---|
| 2687 | | new_identifier_parameter_array |
---|
| 2688 | ; |
---|
[b87a5ed] | 2689 | |
---|
| 2690 | new_identifier_parameter_ptr: // CFA |
---|
[dd51906] | 2691 | ptrref_operator type_specifier |
---|
[4d51835] | 2692 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2693 | | type_qualifier_list ptrref_operator type_specifier |
---|
[4d51835] | 2694 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2695 | | ptrref_operator new_abstract_function |
---|
[4d51835] | 2696 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2697 | | type_qualifier_list ptrref_operator new_abstract_function |
---|
[4d51835] | 2698 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2699 | | ptrref_operator new_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2700 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2701 | | type_qualifier_list ptrref_operator new_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2702 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2703 | ; |
---|
[b87a5ed] | 2704 | |
---|
| 2705 | new_identifier_parameter_array: // CFA |
---|
[de62360d] | 2706 | // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to |
---|
| 2707 | // shift/reduce conflict with new-style empty (void) function return type. |
---|
[2871210] | 2708 | '[' ']' type_specifier |
---|
| 2709 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2710 | | new_array_parameter_1st_dimension type_specifier |
---|
| 2711 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2712 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2713 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2714 | | new_array_parameter_1st_dimension multi_array_dimension type_specifier |
---|
| 2715 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2716 | | multi_array_dimension type_specifier |
---|
| 2717 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2718 | | '[' ']' new_identifier_parameter_ptr |
---|
| 2719 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2720 | | new_array_parameter_1st_dimension new_identifier_parameter_ptr |
---|
| 2721 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2722 | | '[' ']' multi_array_dimension new_identifier_parameter_ptr |
---|
| 2723 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2724 | | new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr |
---|
| 2725 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2726 | | multi_array_dimension new_identifier_parameter_ptr |
---|
| 2727 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2728 | ; |
---|
[51b7345] | 2729 | |
---|
| 2730 | new_array_parameter_1st_dimension: |
---|
[4d51835] | 2731 | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2732 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2733 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2734 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2735 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
| 2736 | // declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
| 2737 | // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot |
---|
| 2738 | // appear in this context. |
---|
| 2739 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
| 2740 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
| 2741 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
| 2742 | ; |
---|
[b87a5ed] | 2743 | |
---|
[de62360d] | 2744 | // This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no |
---|
| 2745 | // identifier to which the type applies, e.g.: |
---|
[c11e31c] | 2746 | // |
---|
[b87a5ed] | 2747 | // [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2748 | // [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2749 | // |
---|
| 2750 | // These rules need LR(3): |
---|
| 2751 | // |
---|
[2871210] | 2752 | // new_abstract_tuple identifier_or_type_name |
---|
| 2753 | // '[' new_parameter_list ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[c11e31c] | 2754 | // |
---|
| 2755 | // since a function return type can be syntactically identical to a tuple type: |
---|
| 2756 | // |
---|
[b87a5ed] | 2757 | // [int, int] t; |
---|
| 2758 | // [int, int] f( int ); |
---|
[c11e31c] | 2759 | // |
---|
[2871210] | 2760 | // Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce |
---|
[de62360d] | 2761 | // new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary |
---|
| 2762 | // lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and tuple declarations are |
---|
| 2763 | // duplicated when appearing with new_function_specifier. |
---|
[b87a5ed] | 2764 | |
---|
| 2765 | new_abstract_declarator_tuple: // CFA |
---|
[4d51835] | 2766 | new_abstract_tuple |
---|
| 2767 | | type_qualifier_list new_abstract_tuple |
---|
| 2768 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2769 | | new_abstract_declarator_no_tuple |
---|
| 2770 | ; |
---|
[b87a5ed] | 2771 | |
---|
| 2772 | new_abstract_declarator_no_tuple: // CFA |
---|
[4d51835] | 2773 | new_abstract_ptr |
---|
| 2774 | | new_abstract_array |
---|
| 2775 | ; |
---|
[b87a5ed] | 2776 | |
---|
| 2777 | new_abstract_ptr: // CFA |
---|
[dd51906] | 2778 | ptrref_operator type_specifier |
---|
[4d51835] | 2779 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2780 | | type_qualifier_list ptrref_operator type_specifier |
---|
[4d51835] | 2781 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2782 | | ptrref_operator new_abstract_function |
---|
[4d51835] | 2783 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2784 | | type_qualifier_list ptrref_operator new_abstract_function |
---|
[4d51835] | 2785 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2786 | | ptrref_operator new_abstract_declarator_tuple |
---|
[4d51835] | 2787 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2788 | | type_qualifier_list ptrref_operator new_abstract_declarator_tuple |
---|
[4d51835] | 2789 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2790 | ; |
---|
[b87a5ed] | 2791 | |
---|
| 2792 | new_abstract_array: // CFA |
---|
[de62360d] | 2793 | // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with |
---|
| 2794 | // empty (void) function return type. |
---|
[2871210] | 2795 | '[' ']' type_specifier |
---|
[2298f728] | 2796 | { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[2871210] | 2797 | | '[' ']' multi_array_dimension type_specifier |
---|
[2298f728] | 2798 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[4d51835] | 2799 | | multi_array_dimension type_specifier |
---|
| 2800 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2801 | | '[' ']' new_abstract_ptr |
---|
[2298f728] | 2802 | { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[2871210] | 2803 | | '[' ']' multi_array_dimension new_abstract_ptr |
---|
[2298f728] | 2804 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[4d51835] | 2805 | | multi_array_dimension new_abstract_ptr |
---|
| 2806 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2807 | ; |
---|
[b87a5ed] | 2808 | |
---|
| 2809 | new_abstract_tuple: // CFA |
---|
[4d51835] | 2810 | '[' push new_abstract_parameter_list pop ']' |
---|
| 2811 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 2812 | ; |
---|
[b87a5ed] | 2813 | |
---|
| 2814 | new_abstract_function: // CFA |
---|
[2871210] | 2815 | '[' ']' '(' new_parameter_type_list_opt ')' |
---|
[2298f728] | 2816 | { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); } |
---|
[4d51835] | 2817 | | new_abstract_tuple '(' push new_parameter_type_list_opt pop ')' |
---|
[2298f728] | 2818 | { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); } |
---|
[4d51835] | 2819 | | new_function_return '(' push new_parameter_type_list_opt pop ')' |
---|
[2298f728] | 2820 | { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); } |
---|
[4d51835] | 2821 | ; |
---|
[b87a5ed] | 2822 | |
---|
[de62360d] | 2823 | // 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in |
---|
| 2824 | // each declaration, and in the specifier-qualifier list in each structure declaration and type name." |
---|
[c11e31c] | 2825 | // |
---|
[de62360d] | 2826 | // 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of |
---|
| 2827 | // the declaration specifiers in a declaration is an obsolescent feature." |
---|
[c11e31c] | 2828 | // |
---|
| 2829 | // 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
---|
| 2830 | // prototype-format parameter type declarators) is an obsolescent feature." |
---|
| 2831 | // |
---|
[de62360d] | 2832 | // 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and |
---|
| 2833 | // declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature. |
---|
[51b7345] | 2834 | |
---|
[c11e31c] | 2835 | //************************* MISCELLANEOUS ******************************** |
---|
[51b7345] | 2836 | |
---|
[b87a5ed] | 2837 | comma_opt: // redundant comma |
---|
[4d51835] | 2838 | // empty |
---|
| 2839 | | ',' |
---|
| 2840 | ; |
---|
[51b7345] | 2841 | |
---|
| 2842 | assignment_opt: |
---|
[4d51835] | 2843 | // empty |
---|
| 2844 | { $$ = 0; } |
---|
| 2845 | | '=' assignment_expression |
---|
| 2846 | { $$ = $2; } |
---|
| 2847 | ; |
---|
[51b7345] | 2848 | |
---|
| 2849 | %% |
---|
[c11e31c] | 2850 | // ----end of grammar---- |
---|
[51b7345] | 2851 | |
---|
[0da3e2c] | 2852 | extern char *yytext; |
---|
| 2853 | |
---|
[5f2f2d7] | 2854 | void yyerror( const char * ) { |
---|
[2298f728] | 2855 | cout << "Error "; |
---|
[b87a5ed] | 2856 | if ( yyfilename ) { |
---|
[2298f728] | 2857 | cout << "in file " << yyfilename << " "; |
---|
[5f2f2d7] | 2858 | } // if |
---|
[2298f728] | 2859 | cout << "at line " << yylineno << " reading token \"" << (yytext[0] == '\0' ? "EOF" : yytext) << "\"" << endl; |
---|
[51b7345] | 2860 | } |
---|
| 2861 | |
---|
[c11e31c] | 2862 | // Local Variables: // |
---|
[b87a5ed] | 2863 | // mode: c++ // |
---|
[de62360d] | 2864 | // tab-width: 4 // |
---|
[c11e31c] | 2865 | // compile-command: "make install" // |
---|
| 2866 | // End: // |
---|